Fillable vs SimplePDF

Fillable is a web and API service for turning PDFs into guided client workflows. It detects fields, accepts document uploads, supports signatures, and creates shareable completion links that clients can use without an account or app. Browser tools can fill, create, sign, merge, split, compress, convert, and OCR PDFs. Guided packs collect completed forms and requested documents; the free plan includes one active pack, all library templates and official forms, and a test API key. Teams can import existing PDFs, apply field validation and conditional logic, and export PDF or JSON. The REST API parses PDF fields and text into JSON and fills existing form fields. Each key allows 100 requests per calendar day, counting authenticated calls that succeed or return errors. It does not create PDFs from HTML, convert file formats, or add fields to flat PDFs. Core tools run in the browser; server-side conversions upload files and delete them afterward. Paid monthly plans start at $9/mo.

SimplePDF edits, fills, signs, and manages PDF documents in a browser. Users can add text, checkboxes, and images, detect form fields automatically, and sign documents. Page controls merge PDFs, reorder, rotate, or delete pages, and add blank pages or additional PDFs. The maker says editing happens in the browser and documents stay on the user’s device. Businesses can embed PDFs, collect submissions, and automate workflows through a Chrome extension, React component, web script, iframe, Bubble plugin, or WordPress plugin. Connections to Make and n8n support document processing, while S3-compatible storage, webhooks, and email alerts support completed submissions. Plans are marked GDPR compliant; Free, Pro, and Premium are marked HIPAA compliant. Paid PHI workflows should use Bring Your Own Storage, with a BAA available on request. It offers extension and web access, with a free plan and paid plans from $99 a month.