100+ Free Tools.
No Credit Card.
AI Writing, PDF, image, and developer tools from one Coda One platform — all in your browser.
Need a direct head-to-head instead of a directory? Start with a featured comparison.
AI Writing Tools
14 tools
AI-powered writing tools that help you humanize AI text, check grammar, rewrite content, and generate essays, emails, and stories. Each tool uses advanced language models to produce natural, human-quality output. AI Humanizer and Grammar Checker include 3 free uses per day; other writing tools offer 3 free uses per day, and signup is not required to start — upgrade for higher word limits and more writing modes.
AI Detector
FreeCheck if text is AI-generated
AI Humanizer
3/day freeMake AI text sound human
AI Rewriter
3/day freeRewrite in 8 tones
Grammar Checker
3/day freeFix grammar and spelling
AI Summarizer
3/day freeSummarize long content
AI Translator
3/day freeTranslate to 50+ languages
Essay Writer
3/day freeGenerate structured essays
Email Writer
3/day freeDraft professional emails
Story Generator
3/day freeGenerate stories in 5 genres
Text to Speech
3/day freeConvert text to audio
Plagiarism Checker
3/day freeCheck content originality
Audio to Text
3/day freeTranscribe audio files
Chat with PDF
3/day freeAsk questions about PDFs
YouTube Summarizer
3/day freeSummarize YouTube videos
PDF Tools
11 tools
A complete set of PDF tools that run entirely in your browser. Merge, split, compress, rotate, protect, and convert PDF files without uploading anything to a server. Your documents stay on your device — we never see them. All PDF tools are completely free with no daily limits, no watermarks, and no file size restrictions beyond your device memory.
Merge PDF
FreeCombine multiple PDFs
Split PDF
FreeExtract pages from PDF
Compress PDF
FreeReduce PDF file size
Word to PDF
FreeConvert .docx to PDF
PDF to Word
FreeConvert PDF to .docx
Rotate PDF
FreeRotate PDF pages
Protect PDF
FreeAdd password to PDF
Page Numbers
FreeAdd page numbers
PDF to JPG
FreeConvert PDF to images
JPG to PDF
FreeConvert images to PDF
Excel to PDF
FreeConvert spreadsheets
Image Tools
9 tools
Compress, resize, crop, convert, and enhance images directly in your browser. Remove backgrounds with AI, extract text with OCR, and upscale low-resolution images. Like our PDF tools, every image tool processes files in your browser and is not uploaded to our servers during processing. All image tools are free to use in the browser.
Image Compressor
FreeReduce image file size
Image Resizer
FreeScale to any dimension
Crop Image
FreeCrop to any size
Flip & Mirror
FreeMirror or rotate images
Image Converter
FreePNG, JPG, WebP, AVIF
Watermark
FreeAdd text/image watermark
OCR
FreeExtract text from images
Remove Background
FreeAI background removal
Image Upscaler
FreeEnhance image quality
Developer Tools
14 tools
Everyday developer utilities: format JSON, decode JWTs, convert between CSV and JSON, generate hashes, encode Base64 and URLs, create QR codes, and more. Every tool runs client-side with zero latency. No API calls, no rate limits, no data collection. Bookmark the ones you use daily — they load instantly and work offline.
CSV to JSON
FreeConvert CSV to JSON
JSON to CSV
FreeConvert JSON to CSV
JWT Decoder
FreeDecode JWT tokens
Lorem Ipsum
FreeGenerate placeholder text
Markdown Preview
FreePreview Markdown
Timestamp
FreeConvert timestamps
Case Converter
FreecamelCase, snake_case
JSON Formatter
FreeFormat & validate JSON
Base64
FreeEncode & decode Base64
URL Encoder
FreeEncode & decode URLs
Hash Generator
FreeMD5, SHA-256, SHA-512
Password Generator
FreeGenerate strong passwords
Word Counter
FreeCount words & characters
QR Generator
FreeGenerate QR codes
Why Are These Tools Free?
Most of our tools — PDF, image, and developer utilities — run entirely in your browser. There is no server cost for us, so there is no reason to charge you. AI writing tools use language model APIs that cost money per request, which is why they have a free daily limit. We keep costs down by processing everything we can on your device.
Browser-Based
PDF, image, and dev tools use WebAssembly and browser APIs. Your data stays on your device. Our server cost is zero.
Private by Default
No file uploads, no tracking pixels, no data harvesting. We built these tools the way we would want them built for ourselves.
Crypto Payments Welcome
If you do upgrade, we accept USDT, USDC, and other cryptocurrencies alongside traditional cards. No bank account required.
Free vs Paid — What You Get
Most tools stay free with a generous daily limit. Paid plans unlock higher limits on AI writing tools and premium features.
| Feature | Free | Starter ($9.99/mo) |
|---|---|---|
| AI Writing Tools | 3/day, 300 words | 30,000 words/mo |
| PDF Tools | No fixed daily cap | No fixed daily cap |
| Image Tools | No fixed daily cap | No fixed daily cap |
| Developer Tools | No fixed daily cap | No fixed daily cap |
| Chrome Extension | 5 tools, 3/day | Higher usage included |
| Writing Modes | 5 basic modes | 9 modes |
| Priority Support | — | Email support |
Frequently Asked Questions
Are these tools really free?
Yes. PDF, image, and developer tools are completely free with no daily limit. AI writing tools offer 3 free uses per day. No credit card required.
Do I need to sign up?
No. All tools work without creating an account. Sign up only if you want to track usage history or upgrade to a paid plan.
Where are my files processed?
PDF, image, and developer tools process files in your browser and are not uploaded to our servers during processing. AI writing tools send text to our servers for processing but we don't store your content.
Can I pay without a credit card?
Yes. We accept USDT, USDC, and other cryptocurrencies. No credit card or bank account needed.
Is there a Chrome extension?
Yes. Our free Chrome extension gives you right-click access to 5 AI writing tools on any website. Install from the Chrome Web Store.
What happens after the free tier?
You can keep using free tools indefinitely. AI writing tools reset to 3 free uses every day. Upgrade starting at $9.99/month for more words and premium features.
Start Using Free Tools Now
Signup not required. No credit card. Pick a tool and start working.