AI Crawler Blocker
Generate robots.txt rules to block GPTBot, ClaudeBot, CCBot and other AI crawlers.
All Tools
Every one of our 1329 tools in one place — free, no sign-up, and all of them run inside your own browser.
1329 free tools
11 categories
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Chat Transcript Formatter
Clean up a pasted chat log into a tidy transcript, Q&A pairs, JSON or CSV.
AI Writing Pattern Checker
Find the words and habits that make text read as AI-generated, so you can edit them out.
Fine-Tuning Cost Calculator
Estimate what a fine-tune costs to train and run, and when it pays for itself.
Prompt Injection Checker
Scan untrusted text for prompt injection patterns and hidden characters before a model reads it.
Midjourney Parameter Builder
Add aspect ratio, stylize, chaos, style references and more to a Midjourney prompt.
Few-Shot Example Builder
Turn input and output pairs into a clean, consistent few-shot prompt block.
CGPA to Percentage Converter
GPA and percentage both ways, on the Bangladeshi, CBSE, Indian and US scales.
Markdown to BBCode Converter
Post your Markdown notes on a forum — headings, lists, quotes and code converted.
Pug to HTML Converter
Render a Pug template to HTML, with your own variables, using the real Pug compiler.
HTML to Pug Converter
Turn HTML into Pug templates — shorthand classes and ids, indentation, no closing tags.
RGB to HSV Converter
RGB to HSV/HSB and back — the model colour pickers actually use.
Word to Text Converter
Strip a .docx back to plain text — words and paragraphs, nothing else.
Word to HTML Converter
Clean, semantic HTML from a .docx — no Word class soup, images embedded.
Excel to CSV Converter
Turn any sheet of an .xlsx, .xls or .ods workbook into clean CSV, without uploading it.
Chmod Calculator
Convert file permissions between octal, symbolic and checkboxes.
License Generator
Pick an open source licence and get a LICENSE file with your details.
Luhn Validator
Check any number against the Luhn checksum and see the working.
Text Shadow Generator
Build text shadows, outlines and glows with a live preview.
Quoted-Printable Encoder
Encode and decode quoted-printable, the MIME encoding in every email header.
Base64 to Hex
Convert Base64 back to hexadecimal, with your choice of separator.
Annuity Calculator
What regular payments grow to, ordinary or due.
Debt-to-Income Ratio Calculator
The DTI ratio lenders check before approving you.
Business Loan Calculator
Business loan payment, total cost and effective APR with fees.
Volume Calculator
Volume of any 3D shape and conversion between volume units.
Height Calculator
Convert height between units and predict a child's adult height.
Ovulation Calculator
Your fertile window and ovulation day for the next six cycles.
Background Remover
Cut a subject out of its background, in your browser.
Picture Element Generator
Build a picture element with AVIF and WebP fallbacks.
Gradient Image Generator
Create a gradient image as a real downloadable file.
Image Aspect Ratio Calculator
Work out ratios and missing dimensions without an image.
EXIF Data Viewer
Read the camera, lens, settings and GPS inside a photo.
Image Color Picker
Click anywhere on an image to read its exact colour.
Saturation Adjuster
Adjust colour intensity, with vibrance for skin-safe boosts.
SVG Optimizer
Strip the bloat out of exported SVG files.
WebP Compressor
Compress WebP files, or convert into WebP and compress.
JPG to AVIF Converter
Convert images to AVIF, the smallest web format available.
Bubble Text Generator
Turn text into ⓑⓤⓑⓑⓛⓔ letters in circles.
Remove Emojis
Strip emoji and their invisible joiners out of any text.
Shuffle Text
Randomise a text at the level you choose: lines, words or letters.
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