Edit PDFs Free in Your Browser
A complete free online PDF editor that works entirely in your browser. Add or replace text, insert images and signatures, highlight, redact, draw shapes, and rearrange pages — all without uploading your file to any server. No signup, no watermark, no file size limit, no page count cap.
Whether you need to fix a typo in a contract, sign a document, fill out a form, or merge edits from multiple sources, this editor handles it. Your PDF stays on your device the entire time — true privacy by design.
What You Can Do
Edit Text
Add new text boxes anywhere. Whiteout existing text and replace it with new content. Custom fonts, colors, and sizes.
Add Images
Insert logos, photos, signatures, or stamps. Drag to reposition, drag corner to resize. PNG and JPEG supported.
Sign & Initial
Type a signature in cursive style or upload an image. Place your signature anywhere on the document.
Highlight & Annotate
Add yellow highlights, color underlines, draw rectangles, or mark important sections for review.
Redact / Whiteout
Cover sensitive information with black redaction boxes or white blocks before sharing or printing.
Multi-Page Support
Navigate through every page with a thumbnail sidebar. Edits on each page are saved independently.
Why Browser-Based?
Most online PDF editors upload your file to their servers, process it there, and send it back. That's a privacy problem when your document contains contracts, medical info, financial statements, or anything sensitive — you're trusting an unknown server with confidential data.
For tabular data trapped in a PDF, the PDF to XLSX converter pulls rows and columns out into an Excel workbook.
When the goal is a fully editable Word document rather than markup on the PDF itself, the PDF to DOCX converter is the right hop next.
This editor is different. Everything happens locally in JavaScript using pdf-lib for writing and PDF.js for rendering. Once the page loads, you can disconnect from the internet entirely and the editor still works. Your file never leaves your device.
Need Something Specific?
This editor handles general editing. For specialized tasks, use a dedicated tool — they're all free and browser-based:
View all PDF tools →
Built by Derek Giordano · Part of Ultimate Design Tools
Frequently Asked Questions
Is this PDF editor really free?+
Yes — completely free with no page limits, no file size limits, no watermarks, and no signup required. All features are unlocked, forever.
Is it safe to edit PDFs online?+
Yes. This editor runs 100% in your browser. Your PDF files are never uploaded to any server — all editing happens locally on your device, even with the page offline.
Can I edit existing text in a PDF?+
Yes. Use the Whiteout tool to cover the original text, then add a new text box with your replacement. This is the standard approach used by most online PDF editors and works on any PDF regardless of font embedding.
Does it work on mobile?+
Yes — the editor is fully responsive and works on phones and tablets. For complex multi-page edits, a desktop or tablet is recommended for the best experience.
What file size can I edit?+
Files up to ~100MB work smoothly in modern browsers. Performance depends on your device's RAM. For very large PDFs, splitting into smaller files first is recommended.
How is this different from pdf-form-filler and pdf-redactor?+
PDF Editor is the generalist of the suite — text, images, signatures, shapes, highlights, and whiteout all in one tool. The specialist tools are tighter and faster for the exact job they target. PDF Form Filler is built around AcroForm field detection and handles checkbox states, radio groups, and dropdown options correctly. PDF Redactor is built around true black-box redaction that actually removes the underlying text bytes rather than just covering them visually. Use the editor when you need a single tool for mixed tasks, and use the specialist when the file is form-heavy or contains sensitive data that needs to be destroyed rather than hidden.
Can I save my edits and come back to them later?+
No, not within the editor itself. The editor runs entirely in your browser session and does not store any state between visits — that is the privacy tradeoff for the no-upload promise. The practical workflow is to export the edited PDF whenever you stop, then re-open the exported file to continue. Exports are loss-less for the text and image overlays you added, so re-opening an exported file and adding more edits behaves the same as continuing the original session.
Which PDF libraries power the editor under the hood?+
Two open-source libraries do all of the heavy lifting. PDF.js handles rendering, parsing, and page-by-page display in the canvas. pdf-lib handles export — taking the original byte stream plus your overlay objects and producing a new valid PDF file. Both are MIT-licensed and run entirely in the browser as plain JavaScript modules. No native code, no WebAssembly toolchain, and no third-party API calls. Pinning the versions and serving them from the same origin means the entire pipeline is auditable end to end.