PDF Editor
Edit, sign, and fill PDFs in your browser — nothing is uploaded.
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Edit and Sign PDFs Without Uploading
Most "free" online PDF editors upload your document to their servers to process it — a real privacy risk for contracts, IDs, tax forms, and medical records. This PDF editor is different: it runs entirely in your browser using pdf.js, Fabric.js, and pdf-lib. Your file is read into memory locally, edited on a canvas overlay, and exported on your own machine. Nothing is uploaded, nothing is stored on a server, and your signature never leaves your device.
How to Edit a PDF Online
Open your PDF with the file picker or by dragging it in. Use the toolbar to add text boxes, images, rectangles, highlights, freehand drawing, or whiteout blocks anywhere on the page — every object is movable, resizable, and deletable. To edit existing text, place a whiteout block over the old text and add a new text box on top (PDFs store fixed glyphs, so this overlay method is how all editors "change" existing text). Use the sidebar to reorder, rotate, or delete pages, or merge in another PDF. When you are done, click Export to flatten everything into a downloaded PDF.
How to Add a Signature to a PDF
Click the Signature tool to open the signature panel. Draw your signature with a mouse or touchscreen, type it in a signature-style font, or upload an image of your signature. The result becomes a draggable, resizable object you can place on any page and reuse across pages. Like everything else, your signature is processed and stored only in your browser — it is never uploaded — making this a genuinely private way to sign contracts and agreements online.
Fill PDF Forms and Manage Pages
If your PDF contains interactive AcroForm fields, the editor detects them so you can fill text fields and tick checkboxes, then flattens the values into the exported file. Beyond editing, you can combine multiple PDFs, extract or delete specific pages, rotate pages, and drag pages into a new order — all client-side. It is a lightweight alternative to desktop PDF software for the everyday tasks of signing, filling, annotating, and reorganizing documents.
Frequently Asked Questions
Everything you need to know about our PDF Editor utility and how we handle your data.
What is a PDF Editor?
PDF Editor lets you edit, sign, and fill PDF documents entirely inside your browser — add text boxes, images, highlights, freehand drawing, and whiteout blocks; drop in a hand-drawn, typed, or uploaded signature; fill existing form fields; and merge, split, reorder, rotate, or delete pages, then export a flattened PDF. Unlike online PDF editors that upload your file to a server to process it, every operation here runs locally using WebAssembly and JavaScript (pdf.js, Fabric.js, pdf-lib) — your document and your signature never leave your device, so it is safe for contracts, tax forms, medical records, and anything confidential. There is no account, no watermark, no page limit, and no file ever touches a network. Because it edits by overlaying new content and flattening it into the original page (the standard, reliable approach), the original page content stays intact underneath while your additions are baked in on export.
How do I use PDF Editor?
Simply input your data into the fields above. Our PDF Editor will process your information instantly. You can then copy the results or export them depending on the specific tool features like No Upload — 100% Local or Draw / Type / Upload Signature.
Is this PDF Editor free?
Yes, the PDF Editor on ToolsHubKit is 100% free to use. we don't require any signup, subscriptions, or hidden fees. It is part of our suite of professional developer utilities designed for the community.
Is my data safe/private?
Your privacy is our primary concern. All processing for the PDF Editor occurs locally within your browser. No data is ever uploaded to our servers or stored in any cloud environment. You can even use this tool offline.