🍍 Pineapple Picture Tool
A lightweight, client-side image processing tool. All processing happens in the browser — no uploads, no accounts, no tracking.
Live: pineapplepicturetool.vercel.app
Features
| Tool | Description |
|---|
| HEIC Convert | Convert Apple HEIC / HEIF images to JPG (default), PNG or WebP. Safari uses the system decoder; other browsers use a bundled libheif WASM decoder that runs in a Web Worker. |
| Compress | Reduce file size with format (JPG / PNG / WebP), quality slider (1–100), and optional resize in the same step. |
| Format Convert | Convert between PNG, JPG, and WebP. |
| Remove EXIF | Strip all metadata — GPS location, device info, timestamps — from JPG and PNG files. |
| Resize | Resize by fixed pixel dimensions (with optional aspect-ratio lock) or by percentage. |
| Crop | Crop to common aspect ratios (1:1, 4:3, 3:4, 16:9, 9:16). Single-file mode shows a draggable canvas preview; batch mode auto-center-crops. |
| Rotate / Flip | Rotate 90° CW / CCW / 180°, flip horizontal, flip vertical. |
| Brightness | Adjust brightness and contrast with live CSS-filter preview on the first file. |
| Batch Rename | Rename output files with a custom pattern. Use {n} for auto-incrementing numbers and {original} for the original filename stem. If {n} is omitted, numbers are appended automatically. |
Pipeline workflow
After processing a batch you don't need to download immediately. Click Continue → to push all results into a persistent staging tray anchored below the navigation bar. The tray:
- Shows image thumbnails for every file
- Persists when you switch tools
- Lets you load a single file (click its thumbnail) or all files at once (Load all ↓) into the next tool
- Can be repeated as many times as needed before a final download
Download
- Save — download a single processed file
- Download All — package all results into a
.zip
Stack
EXIF orientation handling
All canvas-based tools (Compress, Convert, Resize, Crop, Rotate/Flip, Brightness) automatically correct image orientation. The app parses the EXIF Orientation tag directly from raw bytes — both JPEG (APP1 marker) and PNG (eXIf chunk) — then bakes the rotation into canvas pixels before export. Output files are always correctly oriented regardless of output format.
Local development
npm install
npm run dev
Build for production:
npm run build
电子书工具 (/ebook)
A separate page: ebook format conversion (PDF / Word / EPUB / TXT … → AZW3 / EPUB / MOBI / PDF / DOCX / TXT), plus a list of legal places to find and buy ebooks. Unlike the picture tools, conversion runs on a server — Calibre is far too big for the browser or a Vercel function.
Conversion is paused (since 2026-10): the server is offline, so the page shows only the book-finder plus a notice with a copyable prompt for resuming the work (src/ebook/ConvertPaused.jsx). Flip CONVERT_PAUSED in src/ebook/EbookPage.jsx once a new host is up.
src/ebook/ — the page (lazy-loaded; the picture tool never downloads it). Channel list: src/ebook/channels.json.ebook-service/ — Docker + FastAPI wrapper around Calibre's ebook-convert, not deployed right now. See its README.tools/pdf2kindle.py — offline alternative: converts a folder of PDFs with the local Calibre and copies them onto a USB-mounted Kindle.
When conversion is on, the page password is the service's API_KEY. Point the frontend at the service with VITE_EBOOK_API (see .env.example).
Design
Pineapple color palette — golden yellow #F5C518, forest green #3A6B4A, warm cream background. Diamond crosshatch CSS pattern inspired by pineapple skin texture.
License
Copyright © 2026 Raki · [email protected]
Personal & non-commercial use only. You may use, copy, and modify this project for personal or educational purposes. Commercial use of any kind — including selling, sublicensing, or building a paid service on top of this code — is prohibited without explicit written permission from the copyright holder. See LICENSE for full terms.
Non-goals (v1)
Background removal · filters / presets · watermarking · collage / merging · server-side image processing
