Robust PDF API for all your document needs
The pdfFiller REST API empowers developers to integrate an advanced and intuitive editor and form builder into
their software. Edit and annotate PDFs, add fillable fields, share editable forms, and export filled-in forms
using simple API calls.
Complete your solution with integrated PDF tools
Bring seamless PDF management functionality into your application to expand its capabilities and enhance your users’ experience.
Please note: Some of the features listed here are currently in development and will become available soon. Contact us to learn about the solutions we can offer in the meanwhile.
Highly configurable PDF tools API for any use case and industry
Check out our code examples to get you started.
Convert Excel to PDF
PDF Split
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curl --request POST \--url https://pdf.airslate.io/v1/documents/convert/xlsx-to-pdf \--header 'Accept: application/pdf, application/json' \--header 'Authorization: Bearer undefined' \--header'Content-Type: multipart/form-data' \--form file= \
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curl --request POST \--url https://pdf.airslate.io/v1/documents/tools/split-pdf \--header 'Accept: application/json' \--header 'Authorization: Bearer undefined' \--header'Content-Type: multipart/form-data' \--form file= \--form pages=
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Superior developer experience for embedded document workflow
As part of Document Automation Hub by airSlate, PDF Tools API offers developer-friendly features and technical excellence at the most competitive rates.
Developer-centric
Slash the time to develop, configure, and maintain PDF integrations with airSlate’s clear API structure, detailed documentation, code examples, and a centralized dashboard to monitor API usage and reporting.
Flexible & scalable
With the modular and extensible architecture of our API, incorporate any specific PDF functionality into your workflow. As your needs evolve, you can plug in more features at any time.
Practical & cost-effective
Benefit from reduced development and maintenance costs of your PDF integrations with airSlate’s profound industry expertise, technology, and usage-based pricing.
Scalable developer plans to suit any workflow
Gain access to a full suite of APIs to automate your document processes – and only pay for what you use.
Tap into additional resources for hassle-free integration of PDF management capabilities
Solution engineers
Get in touch with our tech experts to pick the right solution for your unique needs.
Drop us a line
Our user reviews speak for themselves
Shermaine Chloe G.
Employee Services Manager
“The best thing about airSlate is how they've made it very easy for people without a programming background
to set up flows.”
Guillermo Gameros
Advisor
“I would highly recommend airSlate to any business leader who is looking to increase efficiency in their
workforce. My team and I have gained precious minutes in our prospecting time.”
Sam Ginzberg
Royal Care
“Great tool for automation! No need for dual entry eliminated the risk of errors. Completing paperwork and
getting signatures turned into a breeze.”
Michael Moore
Transition Insurance Agency
“airSlate has been a great addition to our business! It integrates well with Salesforce allowing our team
to seamlessly get custom documents ready for signatures within our Salesforce record!”
Menachem Tauber
Lubavitch Educational Center
“Automations that took me over 100 hours using Google sheets and scripts, can now be set up in airSlate in
just 20-30 hours.”
Brian Del Terzo
Credilife
“There is no more all inclusive workflow solution like it!”
Mark Mc Nichol
In At The Deep End
“We’re getting information and data back from customers, and internal HR related documents quicker than ever before.”
Julia Whitfield
Champ Plan Advisors
“Amazing Platform, customized for our special needs! Sophisticated, smart & cutting-edge!”
Adam Beaty
Bullogic Wealth Management
“The ease of being able to create forms, PDFs, and other documents that link right into Salesforce has been
instrumental in cutting down our processing times and increasing our customer satisfaction.”
Jim Royster
Cryo-Cell
“The Bots and workflow routing have been beneficial in allowing us to pull data from Salesforce, pre-fill
documents, and then route those documents to various clients for signature.”
Brian Del Terzo
Credilife
“There is no more all inclusive workflow solution like it!”
Mark Mc Nichol
In At The Deep End
“We’re getting information and data back from customers, and internal HR related documents quicker than ever before.”
Julia Whitfield
Champ Plan Advisors
“Amazing Platform, customized for our special needs! Sophisticated, smart & cutting-edge!”
Adam Beaty
Bullogic Wealth Management
“The ease of being able to create forms, PDFs, and other documents that link right into Salesforce has been
instrumental in cutting down our processing times and increasing our customer satisfaction.”
Jim Royster
Cryo-Cell
“The Bots and workflow routing have been beneficial in allowing us to pull data from Salesforce, pre-fill
documents, and then route those documents to various clients for signature.”
Shermaine Chloe G.
Employee Services Manager
“The best thing about airSlate is how they've made it very easy for people without a programming background
to set up flows.”
Guillermo Gameros
Advisor
“I would highly recommend airSlate to any business leader who is looking to increase efficiency in their
workforce. My team and I have gained precious minutes in our prospecting time.”
Sam Ginzberg
Royal Care
“Great tool for automation! No need for dual entry eliminated the risk of errors. Completing paperwork and
getting signatures turned into a breeze.”
Michael Moore
Transition Insurance Agency
“airSlate has been a great addition to our business! It integrates well with Salesforce allowing our team
to seamlessly get custom documents ready for signatures within our Salesforce record!”
Menachem Tauber
Lubavitch Educational Center
“Automations that took me over 100 hours using Google sheets and scripts, can now be set up in airSlate in
just 20-30 hours.”
How to make the most optimal choice between PDF Tools HTTP REST API vs. Fill.io API for Legal teams meeting all your document management needs
Going paperless and improving workflows is one of the key tasks every company encounters today. Nevertheless, simply using a PDF editor itself is not a solution. The simplest way to overcome these challenges is to embed our editor’s functionality into your website or custom app using an Application Programming Interface and accomplish all your tasks in one place.
The market offers numerous solutions, so choosing the most appropriate one can be challenging and time-consuming. Our tool is one of the most well-known, extensive, and developer-friendly document management platforms for organizations of all sizes. Consider its PDF Tools HTTP REST API vs. Fill.io API for Legal department closely and match them by the capabilities provided, security and compliance, and user-friendliness to make your winning decision.
Follow our guideline to compare PDF Tools HTTP REST API vs. Fill.io API for Legal teams and implement the most suitable one into your application:
01
Sign up for an account and go through user authentication.
02
Contact Support and request your Client ID and Client Secret credentials.
03
Obtain your access token examine your API documentation before proceeding.
04
Add a file and start modifying it following your requirements.
05
Create your form with fillable fields and save it as a multi-use template.
06
Share your form with other people through email or secure links for document fill-out.
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Compare PDF Tools HTTP REST API vs. Fill.io API for Legal teams by their features and pricing to make your choice.
Save time and money on document management without printing and mailing paperwork or switching between different programs to complete your tasks. Empower your software with the most powerful form-generating and editing tools. Try PDF Tools Application Programming Interface for free - you’ll be impressed at all the benefits it grants you. Get started today!
Document Automation Hub
A comprehensive suite of APIs to automate document workflows.
Forms API
Create forms that adapt based on user inputs, pre‑fill fields with backend data, and provide a mobile-friendly experience for form completion.
DocGen API
Generate documents from DOCX templates, pre‑fill them with dynamic data of any size using field tags, and add conditional logic.
Flows API
Run automated document workflows from your app or website – launch airSlate Flows to transfer data and documents between external systems.
eSignature API
Embed legally‑binding eSignature into your app to send documents for signature, request payments, create fillable templates, and track the status of documents.
PDF Editing API
Embed editing features to allow users to annotate and make edits to PDF documents without leaving your application.
PDF Tools API
Manipulate PDFs from inside your solution and complete actions such as splitting or merging PDFs, converting files, exporting documents, and more.
For pdfFiller’s FAQs
Below is a list of the most common customer questions. If you can’t find an answer to your question, please don’t hesitate to reach out to us.
What if I have more questions?
Contact Support
What is the most suitable API for PDF editing in Legal department?
API, which stands for Application Programming Interface, is an intermediary connection between two software applications that enables them to interact with each other. Most PDF modifying solutions on the market provide this functionality, making it easier for users to complete and handle forms directly from their websites or applications instead of switching between tools. You can evaluate several popular solutions, for instance, PDF Tools HTTP REST API vs. Fill.io API, and select the one that suits your Legal team’s needs the most.
How do I get PDF Tools HTTP REST API?
To embed robust PDF editing features into your application easily and properly, you should contact our Sales team. Just submit a Contact form on our website. Our professionals will get in touch with you and provide a detailed instruction on the installation process, subscriptions, and other information in which you're interested.
Is PDF Tools HTTP REST API free of charge?
Yes, our service gives you the opportunity for a free trial. Create a developer's Sandbox to try PDF Tools HTTP REST API prior to buying a subscription. Reach out to our Sales professionals for more information. They will guide you through the initail process and assist you in finding the best subscription choice once you are ready to make a deal.
How much is PDF Tools HTTP REST API vs. Fill.io API for Legal department?
Both tools have several subscription plans for their users. The price of our PDF tools API depends on the number of forms your department manages during a specific period. Think of the average amount of documentation you typically edit, approve, and send to others to fill out. Check our pricing page or reach out to our Sales team if you have extensive transactions and need assistance in choosing a suitable solution for your Legal team.
How can I select PDF Tools HTTP REST API vs. Fill.io API for Legal department?
Every tool has its advantages and disadvantages. When selecting a powerful document management solution to embed into your website or custom application, you need to compare a couple of options in action. Sign up for a free developer’s Sandbox and compare PDF Tools HTTP REST API vs. Fill.io API by capabilities and usability, then comare their costs and make your decision.
Ready to kickstart your PDF integration?
Get in touch with our tech experts and they will help you find the optimal API solution for your document editing, management, and automation needs.
