PrepMallow is a free toolkit for getting images, PDFs, and other files ready for online forms, email, and sharing. Compress a photo to a target KB size, turn several pictures into one PDF, or check whether a file meets an upload limit.
Open PrepMallow on the web · Download PrepMallow for Android
PrepMallow for Android bundles all 17 tools for offline use. Version 1.0.1 adds animations for tool screens, file selection and previews, with support for reduced motion. It requires Android 10 or newer and Android System WebView 110 or newer.
- Download
PrepMallow-v1.0.1.apkon your Android phone. - Open the APK from Downloads. If Android prompts, choose Allow from this source for the app that opened it, then return and tap Install.
- Open PrepMallow, choose a tool and select a file. Tap Save or Share when your result is ready.
This build installs alongside the original v1.0.0-preview. Release notes.
| Need | Tools |
|---|---|
| Make an image fit a form | Compress images to a target size such as 100 KB or 200 KB, resize to exact pixel dimensions, or convert HEIC, JPG, PNG, and WebP images. |
| Prepare a PDF | Combine photos into one PDF, merge PDFs, reorder, rotate, or extract pages, export PDF pages as images, or compress a scanned PDF. |
| Get files ready to share | Add a text watermark, remove photo metadata, rename files in batches, or create a ZIP. |
| Check before uploading | Check a file against a size, format, or image dimension requirement. |
A form asks for a JPG under 200 KB and exactly 600 × 600 pixels. Open Compress images, set the size limit and dimensions, then save the result. Use Check file details to verify the copy before submitting it.
PrepMallow processes the files you select on your device. The Android app works offline, and the web version processes your files in your browser. Read about file handling.