zerotool – Private image & PDF tools that run in your browser

Compress and convert images, convert HEIC, strip EXIF, and merge or split PDFs right in your browser. Your files are never uploaded.

How it works

1. Choose your files – Drop photos or PDFs here, or pick them from your device.
2. Processed in your browser – Compression, conversion and merging run inside this browser on your device.
3. Save the result – Save the finished files. Multiple files can be downloaded as one ZIP.

Where do my files go?: Nowhere. Files are processed only in this browser’s memory and are gone when you close the page.
Is it free?: Every tool is free to use, and no sign-up is needed.
Which formats are supported?: Common image formats such as JPG, PNG, WebP and HEIC, and PDFs for merging, splitting, page editing and image export.
Does it change my original files?: Your originals stay as they are. Only the results are saved as new files.

Image Compressor – Shrink photos by quality or to a target file size in KB
Image Resizer & Converter – Resize and convert JPG, PNG and WebP images in batches
HEIC Converter – Convert iPhone HEIC photos to JPG or PNG in batches
Image EXIF Remover – Remove location, device and time metadata without recompressing
PDF Merge, Split & Page Editor – Merge, split, and delete, rotate or reorder PDF pages
PDF to Images Converter – Convert each PDF page to a PNG or JPG image
Favicon & Web Icon Generator – Generate favicon.ico and app icons from one logo
Typing Speed Test – Measure WPM, CPM and accuracy while typing real passages
Desk Clock & D-Day – Full-screen flip and neon clock with D-Day countdowns
Pomodoro Timer – 25-minute focus and 5-minute break cycles with a task list