Private image & PDF tools that run in your browser
LocalKit is a set of free image and PDF tools that run entirely in your browser. Resize, compress, convert, and reorganise files without uploading them — every operation happens on your device, so your files never leave your computer and nothing is stored on a server. No sign-up, no watermark, no limits.
Files never leave your device.Your files never leave your device. All processing happens in your browser.
Change the pixel dimensions of an image — by exact size, by percentage, or to a platform preset.
Image Resizer
Resize JPG, PNG, WebP & GIF. Lock aspect ratio, scale by percent, choose output format and quality.
Open toolSocial Media Resizer
Resize to exact platform dimensions for Instagram, YouTube, LinkedIn, TikTok and more, with center-crop.
Open toolProfile Photo Maker
Crop any photo to a perfect circle for any platform. Saves as a transparent PNG.
Open toolBulk Image Resizer
Resize dozens of images at once and download them as a single ZIP.
Open toolReduce image file size — manually, automatically to a web target, or in batches for email.
Image Compressor
Reduce JPG, PNG & WebP size with a live quality slider. See exact savings before downloading.
Open toolCompress for Web
Auto-find the highest quality that fits under 200 KB (or your target) for faster pages.
Open toolCompress for Email
Batch-compress photos under a per-file limit and download them as a ZIP.
Open toolChange an image from one format to another — JPG, PNG, WebP, HEIC and SVG.
JPG to PNG
Convert JPG to lossless PNG for editing and crisp graphics.
Open toolPNG to JPG
Convert PNG to a smaller JPG, with a background colour for transparent areas.
Open toolWebP to JPG
Convert WebP to widely compatible JPG for Office, print, and email.
Open toolHEIC to JPG
Convert iPhone HEIC photos to JPG, in batches.
Open toolSVG to PNG
Rasterise vector SVG to PNG at 1×, 2×, 4×, or a custom scale.
Open toolMerge, split, compress, and rotate PDF files — all in the browser.
Why LocalKit?
Nothing is uploaded
Most online tools upload your files to a server, process them there, and ask you to trust that they delete them afterwards. LocalKit does the work in your browser instead — using the Canvas API for images and the pdf-lib library for PDFs — so your files never leave your device.
Free, with no strings
Everything is free, with no account, no watermark, and no file-size limits.
Keeps working offline
Because processing happens on your device, the tools keep working offline once a page has loaded.