PDFConverterOnline.com

Free · runs in your browser · nothing is uploaded · works offline

Fill a PDF Form Online — Free, No Upload, Flatten to Lock It

Open the form, type into its fields, save a filled (and optionally locked) copy — on your device.

Open the form, type into its fields, save a filled (and optionally locked) copy — on your device.

      Private by design: processing happens on your device with open-source libraries served from this site (licences). Nothing is uploaded, and once loaded the tool keeps working offline. Need other tools? All tools are on the homepage.

      Free, no ads, no upsell. If it saved you a trip to a paid converter, you can buy the developer a coffee — it funds new tools and keeps this one free. ☕ Buy me a coffee

      Runs on your deviceTested on Pixel 7 & MacBook Air M2Open-source engines · licences

      About this tool

      Add a fillable PDF and its fields appear as plain inputs — text, multi-line text, checkboxes, radio buttons and dropdowns — prefilled with whatever is already there. Type your answers and press Fill form. Choose Flatten to bake the answers into the page so they show in every viewer and cannot be edited; leave it off to keep the form editable.

      Because the form is processed in your browser, it suits exactly the documents forms usually are: applications, declarations, bank and visa paperwork.

      How it works

      1. Step 1. Choose or drop the fillable PDF; its fields are listed.
      2. Step 2. Type the answers; tick checkboxes; pick dropdown values.
      3. Step 3. Choose Flatten (recommended) and press Fill form; download <name>-filled.pdf.

      Questions

      It says no form fields were found — why?

      The PDF is a flat scan or printout, not an interactive form. Use Add text to PDF to type on it, or OCR it first if you need the text.

      What does "flatten" mean?

      The field values are converted to regular page content. The result prints and displays identically everywhere and cannot be changed by the next reader.

      Can I sign the form too?

      Fill it here, then run the result through Sign PDF to add your signature image.

      Good to know

      • Signature fields and buttons are not filled.
      • Field text uses Helvetica (Latin characters).

      Updated · Part of PDFConverterOnline.com, the independent guide to every PDF converter online.