All 27 free tools

Free online tools that never touch a server

Every tool on keptlocal runs locally inside your browser tab using WebAssembly. When you merge a PDF, resize a photo, or convert a HEIC file, the processing happens on your device — not on a server somewhere. There are no upload requests, no accounts to create, and no file size caps imposed by a server quota.

You can verify this yourself: open browser DevTools (F12), switch to the Network tab, and run any tool. You will see zero POST or upload requests fire. The only traffic is the page assets loading once on your first visit.

PDF tools

The PDF toolkit covers the most common document tasks: merging multiple files into one, splitting or extracting specific pages, rotating and reordering pages, adding watermarks or page numbers, converting to and from JPG and PNG, compressing for smaller file sizes, and removing or adding password protection. All processing uses pdf-lib and pdf.js — production-grade libraries that run entirely in WebAssembly.

Image tools

The image toolkit handles compression, resizing, cropping, flipping, rotating, format conversion (including HEIC from iPhones), grayscale conversion, EXIF metadata removal, and Base64 encoding. The Canvas API and the browser-image-compression library do the heavy lifting — same device, no upload.

How this compares to iLovePDF and Smallpdf

iLovePDF, Smallpdf, and most other PDF sites upload your file to their servers. That works, but it means your contract, tax return, or medical document passes through someone else's infrastructure. keptlocal's architecture makes that impossible — there is no server to upload to. The tradeoff is that very aggressive PDF compression (re-encoding embedded images) requires server-side tools; keptlocal's browser-based compression removes metadata and unused objects, which is sufficient for most files.