Add: ToolKnit

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ToolKnit

Website: https://toolknit.com
Category: Utilities
Pricing: Completely Free (Hosted, No Limits)

What is ToolKnit?

ToolKnit is a free online toolbox of 76 browser-based utilities for PDF, image, video, audio, text, calculators, time, charting, and creative workflows. Every tool runs 100% in the user's browser — no uploads, no sign-up, no watermarks, no paywalls.

Why it fits this list

• ✅ Completely free: No premium tier, no feature gating, no sign-up required.
• ✅ Easy to integrate: Browser-based tools that work instantly — no installation, no configuration. Similar to ZeroKit.dev (already listed under DevTools).
• ✅ Developer-friendly: Includes JSON formatter, Base64 encoder, QR code generator, text diff, Markdown preview, and more.
• ✅ Privacy-first: All file processing happens client-side. Files never leave the user's device.

Checklist

• Tool is not already on the list
• Tool is easy to integrate into app workflows (browser-based, zero config)
• Tool fits app workflows (file conversion, formatting, data processing)
• Tool is completely free with no limits
• Correct category and pricing tier used
• Tool is not in no-go-list.md
• Followed the formatting template

Tool categories

Category	Count	Highlights
PDF	7	Compress, Merge, PDF↔Image, PDF↔Word, Extract Text
Image	15	Compress, Resize, Crop, Background Remover (AI), HEIC→JPG
Video	4	Compress, Video→GIF, Video Screenshot, Video→Audio
Audio	6	MP3↔WAV, Audio Converter, Noise Generator, Metronome
Text	8	Character Counter, JSON Formatter, Markdown Preview, Text Diff
Calculator	7	Age, BMI, Percentage, Tip, Currency, Loan
DevTools	5+	Base64, QR Code, Keyboard Tester, Hash Generator