Auto-Straighten
$4.99 day pass · or $9.99/moDetects the skew of any scanned page and rotates it back to perfectly straight — no manual tweaking.
How to use Auto-Straighten — step by step
- 1Open the tool you want. Done — this page is saved in your browser, so it opens with no connection.
- 2Turn on airplane mode (optional).Anyone can claim a tool is private. Airplane mode is what proves it — with the connection off, there's nowhere for your file to go. Skip it and everything still works, but you won't have the added privacy protection of a 100% internet disconnect.Press the airplane-mode button on your own phone, tablet or laptop.The switch is on your device, not on this page. On some laptops and phones the airplane button leaves Wi-Fi or Bluetooth running — if the instrument still shows a connection, turn those off yourself. It reads Offline the moment the connection is really gone.
- 3Add your crooked scan or photo.
- 4The tool detects the tilt automatically.
- 5Check the straightened preview.
- 6Download the straight version.
Detects tilt using projection analysis and rotates your scan straight — all in your browser.
About Auto-Straighten
Auto-Straighten is a browser-based online AI tool from Relavancy. Detects the skew of any scanned page and rotates it back to perfectly straight — no manual tweaking. Unlike most web-based tools that upload your files to a remote server, Auto-Straighten runs entirely in your browser — your documents, photos, and text never leave your device. It works on iPhone and Android as well as desktop, with no app to install and no account to create.
Why use Auto-Straighten?
- Auto-rotate — fix crooked, tilted scans instantly.
- 100% private: your files are processed in your browser and never uploaded to a server.
- No login, no account, no watermarks on your output.
- Works on iPhone, Android, Mac, and Windows — any modern browser, no install.
- Included with a $4.99 day pass or $9.99/month plan — try the free tools first to feel the quality.
- AI-powered results without sending your actual file to the cloud where it can be stored.
- Instant output you can download or copy in one tap.
Common uses for Auto-Straighten
- Enhance and clean up photos and scans without expensive desktop software.
- Automate text, image, and recognition tasks right from your phone or laptop.
- Anyone who needs auto-straighten without installing software or creating an account.
Is Auto-Straighten right for you?
- Best for images under 25 MB. Larger photos may be slow on mobile devices.
- Runs entirely in your browser — nothing is saved between visits, so download your result before closing the tab.
- Your day pass or subscription unlocks this tool across all your devices, but your processed files are never stored — each session starts fresh.
Frequently asked questions
- Is the auto-straighten tool free?
- It's included with a $4.99 day pass or $9.99/month plan. Eight tools are free with no signup: QR Code Generator, QR Code Scanner, Image Compressor, Read Aloud, PDF to Word, Word to PDF, PDF Merge, and PDF Compress.
- Are my images uploaded anywhere?
- No. The angle is detected and corrected entirely in your browser. Your image never leaves your device.
- Does it work on any tilt angle?
- It works best on tilts up to about 45 degrees. Pages rotated nearly sideways may not straighten correctly.
Pricing & privacy
Auto-Straighten is part of Relavancy's suite of 38 browser utilities. Eight tools — QR Code Generator, QR Code Scanner, Image Compressor, Read Aloud, PDF to Word, Word to PDF, PDF Merge, and PDF Compress — are free with no signup. Every other tool is included with a $4.99 day pass or $9.99/month plan. Because processing happens locally in your browser, your files are never uploaded to a server, making Auto-Straighten a private, secure choice for sensitive documents.