TwoThink Image
An image toolbox that lives in your browser
Compress, stitch long images, strip EXIF, plus AI background removal, ID photos and QR codes — all done locally. Nothing is uploaded, no sign-up, free forever.
Basic tools are ready to use
Compressing, cropping and long-image stitching need no model download; the AI background remover loads lazily and then opens instantly from cache.
Works in WeChat
Compressing, cropping and stitching work inside WeChat; for the AI tools we recommend a real browser.
Files are never uploaded
No sign-up, everything is processed locally — your images stay in your browser, including AI cut-outs.
All tools
16 tools in total — every one of them runs locally in your browser
Compress Image
Compress images for free in your browser — files are never uploaded and no sign-up is required. Supports batches and a before/after size comparison.
Resize Image
Resize images for free in your browser — files are never uploaded and no sign-up is required.
Upscale Image
Enlarge images 2x, 3x or 4x for free with Lanczos resampling — processed locally in your browser, images are never uploaded and no sign-up is required.
Crop Image
Crop images for free with preset aspect ratios — processed locally in your browser.
Convert Image Format
Convert image formats for free — JPG, PNG and WebP — with batch support, processed locally in your browser.
Rotate Image
Rotate or flip images for free — processed locally in your browser, files are never uploaded.
Watermark Image
Add watermarks to images in bulk for free — text or logo, tiling, rotation, shadows and preset templates, processed locally in your browser and never uploaded.
Merge Images
Merge several images for free — horizontal, vertical or grid layouts, processed locally in your browser.
Photo Collage Templates
Free online photo collages with nine-grid, four-grid, cinematic strip and ID photo sheet templates — processed locally in your browser, images are never uploaded and no sign-up is required.
Remove Image Metadata
View and clear image EXIF data (including GPS) for free — processed locally in your browser.
Stitch Images Into a Long Image
Stitch several images into one long image for free — tuned for WeChat and Xiaohongshu, processed locally in your browser.
Mosaic / Blur Image
Mosaic or blur images for free to cover faces, plates and ID numbers — processed locally in your browser.
QR Code Generator
Generate QR codes for free with custom colours, sizes, error-correction levels and a centre logo — download PNG or SVG, processed entirely in your browser and never uploaded.
Remove Image Background
Remove image backgrounds for free with automatic AI cut-outs — processed entirely in your browser, images are never uploaded, batches are supported and you can export transparent PNGs.
ID Photo Generator
Make ID photos for free with browser-based AI cut-outs and background swaps — 1-inch, 2-inch, passport and social-security sizes plus A4 layout, and your photo never leaves your device.
Image OCR — Extract Text
Extract text from screenshots, scans and photos with free browser-based OCR — Chinese and English supported, images are never uploaded and no sign-up is required.