PDF.co vs Smallpdf: API Automation vs Online PDF Tools

PDF.co vs Smallpdf: Features, Pricing, and Best Use Cases

PDF.co and Smallpdf both work with PDF documents, but they are designed for different kinds of users.

Smallpdf is primarily a collection of browser, desktop, and mobile tools for people who need to edit, convert, compress, organize, or sign individual documents.

PDF.co is primarily an API and automation platform. It is designed for developers and operations teams that need to process PDFs automatically inside applications, business systems, and no-code workflows.

The most important question is therefore:

  • Does a person need to work directly with the PDF?
  • Or does a system need to process the PDF automatically?

PDF.co vs Smallpdf: the short answer

Choose PDF.co if:

  • You need a REST API for automated PDF processing.
  • You need to process PDFs in Zapier, Make, n8n, or Bubble.
  • You want to extract invoice or document data.
  • You need PDF-to-JPG, PNG, TIFF, or WEBP conversion through an API.
  • You need to generate PDFs from HTML, templates, or webpage URLs.
  • You want to fill PDF forms from application data.
  • You need barcode generation or recognition.
  • You need to process email attachments.
  • You need background jobs, webhooks, or repeatable document workflows.
  • You prefer published usage-based pricing instead of per-user licenses.

Choose Smallpdf if:

  • You need an easy browser-based PDF tool.
  • You want to compress, convert, merge, split, or edit individual files.
  • You need to sign a PDF or request signatures.
  • You want mobile and Windows applications.
  • You want AI tools for chatting with, summarizing, or translating PDFs.
  • You need a straightforward interface for employees or individual users.
  • You do not need to build a customized document-processing workflow.

Some organizations can use both: Smallpdf for occasional employee-driven document work and PDF.co for automated, repeatable processing.

What is PDF.co?

PDF.co is an API and document automation platform for PDF processing, data extraction, document conversion, barcodes, and workflow integrations.

PDF.co can receive a document from an application, email, cloud-storage service, or automation platform, process it, and return the result without requiring someone to manually upload and edit the file.

Common PDF.co use cases include:

  • Extracting invoice fields and line items
  • Applying OCR to scanned PDFs
  • Converting PDF pages into images
  • Generating PDFs from HTML
  • Capturing webpage URLs as PDFs
  • Filling existing PDF forms
  • Extracting text, tables, and structured data
  • Reading and generating barcodes
  • Splitting and merging PDFs
  • Adding text, images, and links
  • Compressing files
  • Processing email attachments
  • Converting PDFs to JSON, CSV, XML, text, HTML, or Excel
  • Classifying incoming documents
  • Running document jobs asynchronously

Developers and automation users can explore the available endpoints in the PDF.co documentation.

What is Smallpdf?

Smallpdf is a user-facing PDF software platform with browser, mobile, and Windows applications.

Its current product collection includes more than 30 document tools covering:

  • PDF compression
  • PDF conversion
  • OCR
  • PDF editing
  • PDF annotation
  • Form filling
  • Redaction
  • Watermarks
  • Page numbering
  • Merging and splitting
  • Page organization
  • PDF-to-JPG conversion
  • Office-to-PDF conversion
  • Electronic signatures
  • Signature requests through Sign.com
  • PDF scanning
  • AI-assisted document tools

Smallpdf emphasizes simplicity. A user selects a tool, uploads a document, completes the task, and downloads or stores the result.

That experience is useful for one-time and employee-driven document tasks. It is different from building PDF processing directly into an application or automated workflow.

The main difference: manual tools versus automated workflows

Smallpdf is designed around the user

A typical Smallpdf process might look like this:

  • A user visits the Smallpdf website.
  • The user chooses Compress PDF.
  • The user uploads a document.
  • Smallpdf processes the file.
  • The user downloads the compressed PDF.

This is appropriate when the work begins with a person who has a specific document task.

PDF.co is designed around the workflow

A comparable PDF.co process might look like this:

  • A customer uploads a PDF to an application.
  • The application sends the file URL to PDF.co.
  • PDF.co compresses the document automatically.
  • The application stores the optimized version.
  • The customer receives a download link.

This is appropriate when the processing needs to happen repeatedly and without manual intervention.

PDF editing

Smallpdf

Smallpdf provides a visual editing interface for common PDF changes.

Depending on the selected tool and plan, users can:

  • Add or edit text
  • Add images
  • Insert shapes
  • Draw on a document
  • Highlight and annotate content
  • Fill forms
  • Crop pages
  • Add page numbers
  • Add watermarks
  • Redact information
  • Organize pages

Smallpdf is the stronger choice when someone wants to view the document and make changes directly.

PDF.co

PDF.co modifies documents through API instructions.

It can:

  • Add text at specified coordinates
  • Add images
  • Add links
  • Add other PDF pages
  • Fill form fields
  • Search for and replace text
  • Delete text
  • Add signatures as images
  • Rotate or delete pages
  • Merge and split files
  • Apply passwords and restrictions

PDF.co is more suitable when the same modification needs to be applied consistently to many documents.

For example, a company could automatically add a customer name, order number, QR code, and watermark to every generated PDF.

PDF conversion

Both platforms support common PDF conversion tasks, but the experience is different.

Smallpdf conversion tools

Smallpdf offers user-facing conversion tools such as:

  • PDF to Word
  • PDF to Excel
  • PDF to PowerPoint
  • PDF to JPG
  • Word to PDF
  • Excel to PDF
  • PowerPoint to PDF
  • JPG to PDF
  • TXT to PDF
  • RTF to PDF
  • HTML to PDF
  • EPUB to PDF
  • PDF to PDF/A

These tools are well suited to individual files and occasional batch work.

PDF.co conversion endpoints

PDF.co can convert PDFs into:

  • CSV
  • JSON
  • XML
  • Text
  • HTML
  • Excel
  • JPG
  • PNG
  • TIFF
  • WEBP

PDF.co can also create PDFs from:

  • HTML
  • Webpage URLs
  • Images
  • Microsoft Office documents
  • Excel files
  • Email messages
  • Existing templates

These conversions can run from a REST API, application, or automated workflow.

PDF-to-image conversion

Both Smallpdf and PDF.co can convert PDF pages to images.

Smallpdf

Smallpdf’s PDF-to-JPG tool is useful when a person needs to:

  • Extract images from a PDF
  • Save PDF pages as JPG files
  • Perform an occasional conversion through a browser

PDF.co

PDF.co supports automated PDF-to-image conversion with output formats including:

  • JPG
  • PNG
  • TIFF
  • WEBP

It is useful for:

  • Creating document thumbnails
  • Generating page previews
  • Preparing PDFs for image-processing or computer-vision systems
  • Converting uploaded documents automatically
  • Processing large numbers of files
  • Selecting specific page ranges
  • Building PDF preview functionality into an application
  • Sending pages to an AI model as images

Choose Smallpdf for a quick manual conversion.

Choose PDF.co when PDF-to-image conversion must run inside an application or repeatable workflow.

HTML-to-PDF and URL-to-PDF

Smallpdf and PDF.co both provide HTML-to-PDF capabilities, but PDF.co offers more automation-oriented options.

Smallpdf

Smallpdf’s HTML-to-PDF tool is intended primarily for a user who wants to upload or provide HTML content and download a PDF.

This works well for occasional conversions.

PDF.co

PDF.co can generate PDFs from:

  • Raw HTML
  • Stored HTML templates
  • Webpage URLs
  • HTML containing dynamic data
  • Existing PDF templates

Developers can control settings such as:

  • Page size
  • Orientation
  • Margins
  • Headers and footers
  • Print background
  • Loading behavior
  • Other rendering options

A business might use PDF.co to generate:

  • Invoices
  • Receipts
  • Certificates
  • Customer reports
  • Shipping documents
  • Tickets
  • Contracts
  • Scheduled website snapshots

PDF.co is the stronger choice when HTML-to-PDF generation is part of an automated application or business process.

OCR and searchable PDFs

Both platforms can apply OCR to scanned PDFs.

Smallpdf OCR

Smallpdf’s OCR tool helps users make scanned text searchable and convert scanned documents into more usable formats.

It is suitable when:

  • A person has an individual scanned document.
  • The goal is to make the file searchable.
  • The user wants to convert the result into Word or another editable format.
  • No custom extraction workflow is required.

PDF.co OCR

PDF.co can combine OCR with:

  • PDF-to-text conversion
  • PDF-to-JSON conversion
  • PDF-to-CSV conversion
  • PDF-to-Excel conversion
  • Document parsing
  • Invoice parsing
  • Table extraction
  • Barcode recognition
  • Document classification
  • Automated workflows

For example:

  • A scanned invoice arrives as an email attachment.
  • PDF.co applies OCR.
  • The workflow extracts the supplier, invoice number, date, total, and line items.
  • The extracted information is sent to an ERP.
  • The original PDF is stored for audit purposes.

Smallpdf is appropriate when the desired output is a searchable or editable document.

PDF.co is more appropriate when recognized data needs to be sent somewhere else automatically.

Data extraction

Data extraction is one of the larger differences between the products.

Smallpdf

Smallpdf can convert PDFs into formats such as Word and Excel. This helps a user move information from a PDF into an editable document.

Its AI features can also help a user:

  • Ask questions about a PDF
  • Summarize a PDF
  • Translate PDF content
  • Generate questions from a document

These are interactive, user-facing experiences.

PDF.co

PDF.co is designed to return document data to an application or workflow.

It can extract:

  • Plain text
  • Structured JSON
  • Tables
  • CSV data
  • XML data
  • Excel data
  • Form fields
  • Invoice fields
  • Line items
  • Barcodes
  • Email attachments

This makes PDF.co suitable for operational workflows in which the document’s data—not just the converted file—is the required output.

PDF form filling

Smallpdf

Smallpdf provides an online PDF form filler. A user can open a form, enter information, add annotations or a signature, and download the completed document.

This is useful for individual forms.

PDF.co

PDF.co can fill forms programmatically.

For example:

  • A customer submits information through a website.
  • The website sends the data to PDF.co.
  • PDF.co fills the corresponding fields in an existing PDF.
  • The completed document is flattened.
  • The system emails or stores the finished PDF.

PDF.co is the stronger choice when many copies of the same form must be populated from a database, spreadsheet, CRM, or application.

Electronic signatures

Smallpdf is the stronger standalone choice when users need an electronic-signature experience.

Smallpdf provides:

  • A tool for signing PDFs
  • Signature requests through Sign.com
  • Signature-related features in applicable paid plans
  • Document tracking for signature requests

PDF.co can add a signature image to a document, but this is different from a full electronic-signature platform.

A full signing workflow may require:

  • Recipient authentication
  • Signature invitations
  • Assigned signature fields
  • Reminders
  • Status tracking
  • Audit trails
  • Legally relevant signing records

Organizations can use PDF.co and an electronic-signature service together:

  • PDF.co generates or fills the document.
  • Sign.com or another signing platform collects the signatures.
  • PDF.co merges, extracts, compresses, or archives the completed files.

Barcode processing

Barcode processing is a major PDF.co differentiator.

PDF.co can:

  • Read 1D barcodes
  • Read 2D barcodes
  • Generate barcodes
  • Read QR codes
  • Find barcodes in PDF documents
  • Find barcodes in images
  • Process files from URLs
  • Use barcode values to classify or route documents

Barcode workflows can help with:

  • Shipping and logistics documents
  • Medical or insurance forms
  • Document-batch separation
  • Inventory records
  • Order tracking
  • Customer identification
  • Generated tickets and labels

Smallpdf is not primarily positioned as a barcode-processing platform.

AI document tools

Smallpdf AI tools

Smallpdf currently provides interactive AI tools such as:

  • Chat with PDF
  • AI PDF summarization
  • PDF translation
  • AI question generation
  • AI-assisted document work

These features are designed for people reading and understanding documents.

PDF.co AI and extraction workflows

PDF.co’s AI-oriented functionality is focused more heavily on document processing, including:

  • AI invoice parsing
  • Document classification
  • Extracting structured data
  • Preparing PDFs for AI systems
  • Converting PDFs into text, images, or structured formats
  • Sending document output into an AI workflow

Choose Smallpdf when a user wants to interact with the content of one or more PDFs.

Choose PDF.co when an application needs to transform, classify, or extract information from documents automatically.

Integrations and workflow automation

Smallpdf integrations

Smallpdf promotes integrations and applications such as:

  • Google Workspace
  • Dropbox
  • Chrome extension
  • Windows application
  • Mobile applications

These make it easier for users to access Smallpdf tools from familiar environments.

PDF.co integrations

PDF.co supports automated workflows through:

  • Zapier
  • Make
  • n8n
  • Bubble
  • Microsoft Power Automate
  • Salesforce
  • Google Apps Script
  • UiPath
  • Cloud-storage and business applications
  • Direct REST API calls

The number of applications available depends on the selected automation platform. It is more useful to verify the specific application and workflow than to rely on one general integration count.

Which is better for integrations?

Choose Smallpdf when users need convenient access through storage, browser, mobile, or desktop applications.

Choose PDF.co when a business process must automatically move documents and data between multiple applications.

Desktop and mobile access

Smallpdf

Smallpdf provides:

  • A browser-based platform
  • A Windows application
  • iOS and Android applications
  • Mobile scanning
  • Cross-device document access

This makes Smallpdf useful for employees who need to work on PDFs from different devices.

PDF.co

PDF.co is accessed primarily through:

  • REST API calls
  • Workflow platforms
  • Business applications
  • Custom software
  • Cloud automations

PDF.co does not replace a full visual mobile or desktop PDF editor.

Developer options

PDF.co is the more direct choice when the requirement is a cloud PDF-processing API.

PDF.co provides:

  • REST API endpoints
  • API documentation
  • An API tester
  • Webhooks and callbacks
  • Synchronous processing
  • Asynchronous background jobs
  • Remote URL input
  • No-code connectors
  • Credit-consumption documentation
  • Examples for developers and automation users

Smallpdf’s main product is a user-facing PDF software platform.

Smallpdf previously owned PDF Tools, a separate developer SDK business. In July 2026, Smallpdf announced that it had sold PDF Tools to Apryse so Smallpdf could focus on its editing software.

Organizations evaluating developer SDKs associated with PDF Tools should now review the current Apryse and PDF Tools offerings separately rather than assuming those products are included with a Smallpdf subscription.

Security

Both providers publish security information, but buyers should review the requirements for the exact product and plan being considered.

Smallpdf

Smallpdf states that it provides:

  • 256-bit TLS encryption for file transfers
  • ISO/IEC 27001 certification
  • GDPR compliance
  • CCPA compliance
  • Swiss data-protection compliance
  • Automatic file deletion for most tools after processing
  • Business options for larger organizations

PDF.co

PDF.co provides security features and documentation covering:

  • Encrypted transmission and storage
  • Automatic expiration and deletion of temporary files
  • Password-protected PDF processing
  • Document permissions
  • Account security controls
  • Single sign-on on applicable plans
  • IP restrictions on applicable plans
  • SOC 2 Type II controls
  • Data-processing and file-retention considerations

Review the PDF.co security documentation and Smallpdf’s current security and privacy documentation before processing sensitive data.

Questions to evaluate include:

  • Where are documents processed?
  • How long are input and output files retained?
  • Can files be deleted immediately?
  • Does the workflow require SSO or IP allow-listing?
  • Which compliance reports are available?
  • Can users store documents in the platform?
  • What happens to documents used with AI features?
  • Does the provider offer a data-processing agreement?
  • Are the provider’s subprocessors acceptable?

Pricing

The products use different pricing models because they serve different workflows.

Smallpdf pricing

Smallpdf uses user-oriented subscription plans.

Its current plan structure includes:

  • Free access with limited document downloads and mobile access
  • Pro for an individual user
  • Team plans priced per seat
  • Business plans with custom pricing
  • Sign.com access in applicable plans
  • A seven-day trial for paid Smallpdf tools

Smallpdf Pro includes access to more than 30 tools, unlimited document downloads, OCR, text editing, stronger compression, AI tools, and mobile access.

Because prices and promotions may vary by region, billing term, and team size, check the current Smallpdf pricing page before purchasing.

PDF.co pricing

PDF.co uses processing credits instead of per-user licenses. Credit consumption depends on the selected endpoint, number of pages, and processing options.

At the time of this review, PDF.co’s published annual-plan rates include:

  • Basic: $8.99 per month, billed annually, with 16,500 credits per month
  • Personal: $22.49 per month, billed annually, with 37,000 credits per month
  • Business 1: $44.99 per month, billed annually, with 80,500 credits per month
  • Business 2: $89.99 per month, billed annually, with 159,850 credits per month
  • Business 3: $270 per month, billed annually, with 483,000 credits per month
  • Enterprise: Custom pricing for larger requirements

PDF.co includes full API access across its published plans.

Review the current PDF.co pricing and credit calculator to estimate a representative workflow.

How the pricing models differ

Smallpdf pricing generally scales according to the number of users who need access to the software.

PDF.co pricing generally scales according to the volume and type of document processing.

Smallpdf may be easier to estimate when:

  • A known number of employees need PDF tools.
  • Most tasks are completed manually.
  • Users want one subscription for editing, conversion, AI tools, and signatures.

PDF.co may be easier to estimate when:

  • One workflow serves many employees or customers.
  • Documents are processed automatically.
  • Usage can be estimated by endpoint, pages, and monthly volume.
  • The company does not want a separate PDF-processing seat for every user.

When to choose Smallpdf

Smallpdf is usually the better choice when:

  • A person needs to complete the task.
  • Most files are processed one at a time.
  • Users want a simple browser interface.
  • Employees need PDF editing and annotation.
  • Electronic signatures are important.
  • Mobile access is required.
  • AI chat and summarization are useful.
  • The workflow does not need custom API logic.
  • A per-user subscription is appropriate.

When to choose PDF.co

PDF.co is usually the better choice when:

  • A system needs to complete the task.
  • Documents arrive continuously.
  • Files must be processed without manual uploads.
  • Data must be extracted into another application.
  • PDF processing is part of a Zapier, Make, n8n, or Bubble workflow.
  • HTML-to-PDF generation is part of a product or business process.
  • PDF pages must be converted to images automatically.
  • Existing PDF forms must be filled from structured data.
  • Barcodes are part of the workflow.
  • Processing should scale without purchasing a license for each user.

When to use both

Using both products can make sense when employees need convenient PDF tools while the company also operates automated document workflows.

Invoice-processing example

  • Invoices arrive as email attachments.
  • PDF.co applies OCR and extracts invoice data.
  • The information is sent to an accounting platform.
  • Unusual files are sent to an employee for review.
  • The employee uses Smallpdf when a simple manual correction is required.

Contract example

  • PDF.co generates a contract from application data.
  • Smallpdf or Sign.com is used for the user-facing signature process.
  • PDF.co merges supporting documents with the completed contract.
  • The final PDF is compressed and archived automatically.

Customer-upload example

  • A customer uploads a PDF.
  • PDF.co creates image previews.
  • PDF.co extracts text and barcodes.
  • An employee uses Smallpdf only if the document requires manual editing.

Questions to ask before deciding

Before selecting PDF.co or Smallpdf, determine:

  • Will people process documents manually?
  • Does the process need to run automatically?
  • Do users need visual PDF editing?
  • Is electronic signature management required?
  • Are scanned documents involved?
  • Does extracted information need to enter another system?
  • Is PDF-to-image conversion required?
  • Are barcodes involved?
  • Must the system generate PDFs from HTML or webpage URLs?
  • Is mobile access important?
  • How many users need access?
  • How many documents and pages will be processed?
  • Which applications need to connect to the workflow?
  • Are there document-retention or regional-processing requirements?
  • Is per-user or usage-based pricing more appropriate?

Frequently asked questions

Is PDF.co an alternative to Smallpdf?

Yes, when the goal is automated PDF processing.

PDF.co can automate many tasks also available through Smallpdf’s online tools, including:

  • Compression
  • Conversion
  • Merging
  • Splitting
  • OCR
  • PDF-to-image conversion
  • HTML-to-PDF
  • Form filling
  • Page manipulation
  • Security

However, PDF.co is not a direct replacement for Smallpdf’s visual web, desktop, and mobile interfaces.

Is Smallpdf an alternative to PDF.co?

Smallpdf can be an alternative for occasional, user-driven tasks.

It is less suitable when documents need to be processed through a custom application, webhook, scheduled automation, or event-driven workflow.

Which product is better for PDF editing?

Smallpdf is better for visual PDF editing.

PDF.co is better for applying known modifications programmatically to many documents.

Which product is better for PDF-to-JPG conversion?

Smallpdf is convenient for a person converting an individual PDF.

PDF.co is better when PDF-to-JPG, PNG, TIFF, or WEBP conversion must run automatically or at scale.

Which product is better for OCR?

Smallpdf is suitable when a person needs to make a scanned PDF searchable or convert it into an editable file.

PDF.co is better when OCR must be combined with extraction, invoice parsing, automation, or downstream system updates.

Which product is better for HTML-to-PDF?

Smallpdf is suitable for occasional manual HTML-to-PDF conversions.

PDF.co is better for generating invoices, reports, certificates, and other PDFs automatically from HTML, templates, or webpage URLs.

Which product is better for electronic signatures?

Smallpdf and Sign.com are better for complete user-facing signature workflows.

PDF.co can prepare, fill, and modify documents around a signing process, but it does not replace a complete electronic-signature platform.

Which product is better for Zapier, Make, or n8n?

PDF.co is designed for these automation environments and provides dedicated integrations and documentation for:

Which product is better for developers?

PDF.co is the more direct choice for developers who need a hosted REST API for document processing.

Organizations interested in the developer SDK business formerly owned by Smallpdf should evaluate its current offerings through PDF Tools and Apryse separately.

Does Smallpdf have a free plan?

Smallpdf offers limited free access. Limits apply to document downloads, mobile access, advanced tools, and other functionality.

Check the current plan terms because free limits and included features can change.

Does PDF.co offer a free trial?

PDF.co provides trial access so developers and automation users can test API endpoints before choosing a paid plan. Check the PDF.co pricing page for current trial terms.

Final recommendation

Choose Smallpdf when people need an easy way to edit, convert, compress, organize, understand, or sign PDFs.

Choose PDF.co when an application or workflow needs to process documents automatically.

  • Use Smallpdf for visual editing, manual conversion, mobile document work, AI-assisted reading, and user-facing signatures.
  • Use PDF.co for APIs, structured extraction, HTML-to-PDF generation, PDF-to-image pipelines, form automation, barcode processing, and workflow integrations.
  • Use both when employees need convenient PDF tools and the surrounding business process also needs automation.

Create a PDF.co account or explore the PDF.co API documentation to test your workflow.