TwoThink
A local-first productivity tool suite
Handle everyday files for free in your browser; reach for offline desktop apps when the job gets heavier. One promise: less uploading, less noise.
Products
Browser tools open on demand; desktop apps are built for heavier offline workflows.
Browser
TwoThink PDF
Browser PDF toolbox
Merge, split, compress, convert to images, extract text, add headers, footers and page numbers — all done locally, free forever with no sign-up.
Open PDF tools
Browser
TwoThink Video
Browser video toolbox
Compress, transcode, trim and convert to GIF — your files never leave your computer.
Open video tools
Browser
TwoThink Image
Browser image toolbox
Compress, stitch long images, strip EXIF, remove backgrounds with AI, make ID photos and QR codes — all in your browser, nothing uploaded.
Open image tools
Browser
TwoThink Dev
Browser developer toolbox
JSON, Base64, timestamps, JWT, Cron, regex, password generation — pure front-end tools, no uploads, no sign-up.
Open developer tools
Browser
TwoThink Privacy
Browser privacy toolbox
Redact Excel / CSV and Word (.docx) files: mask sales lists and contracts locally, nothing uploaded.
Open privacy tools
Windows desktop
回单通
Auto-split bank e-receipts
Sort bank e-receipts by direction and counterparty name, preserving seals and watermarks — fully offline.
View product page
Windows desktop
翻图 FindAgain
Local screenshot search
Catch your system screenshots, index them with on-device OCR, and find them again next week.
View landing page
Principles
Three principles we keep coming back to.
Files never uploaded
Browser tools do all the work locally; desktop apps are offline by default, so your privacy stays under your control.
Local first
Your data stays on your device. When you do need cloud features, you turn them on explicitly — instead of everything going to the cloud by default.
No sign-up
PDF and Video are ready the moment you open them — no account wall, no pop-up ads.
Want to know who is behind this? Read about us