Every tool you need, looped into one place.
OttLoop Tools is a growing library of 200+ image, PDF, text, SEO, developer and calculator utilities — built to be fast, free, and always in reach. No installs, no sign-ups, no loops to jump through.
Pick a category, loop through the tools.
Every OttLoop tool is grouped so you find it in one click. Each card below is being built out one tool at a time — here's what's queued up.
Image Tools
Compressor · Resizer · Cropper · Watermark Remover and 21 more, from format conversion to metadata cleanup.
PDF Tools
Merge · Split · Compress · Unlock · PDF to Text and 14 more for reading, editing and securing PDFs.
Text Tools
Word Counter · Case Converter · Text Cleaner · Lorem Ipsum and 16 more for writers and editors.
Conversion Tools
Binary ⇄ Text · Base64 · Morse Code · Hex · URL Encoder and 10 more format converters.
SEO Tools
Meta Tag Generator · Sitemap Generator · Keyword Density and 17 more for ranking better.
Developer Tools
JSON Formatter · Regex Tester · JWT Decoder · UUID Generator and 16 more for daily dev work.
CSS Tools
Gradient · Box Shadow · Flexbox · Clip Path Generator and 11 more visual CSS builders.
Calculator Tools
EMI · SIP · GST · Loan · Compound Interest Calculator and 10 more for quick math.
Date & Time Tools
Date Difference · Working Days · Countdown Timer and 7 more for scheduling.
Social Media Tools
Hashtag Generator · Bio Generator · Caption Generator and 7 more for creators.
YouTube Tools
Thumbnail Downloader · Tag Extractor · CPM Calculator and 7 more for channels.
E-commerce Tools
SKU Generator · Shipping Calculator · GST Invoice and 7 more for sellers.
Security Tools
Password Generator · SHA256 · MD5 · Hash Checker and 6 more to stay safe.
Education Tools
GPA Calculator · CGPA · Attendance · Study Planner and 6 more for students.
Built to close the loop, not open a new tab.
One address, every tool
tools.ottloop.com holds all 14 categories — no bouncing between sketchy sites for one conversion.
Nothing to install
Every tool runs straight in your browser. Open it, use it, close the tab.
Free, permanently
No trial windows, no locked features, no card on file. That's the loop we're committed to.
Privacy-first by default
Where a tool can run client-side, it does — your files stay on your device, not our servers.
Got a tool idea, or found a bug?
Tell us what's missing from the loop. Every category above is still being built — your request can shape what ships next.