WRITEMarkdown Editor
Write Markdown with a fast, sanitized live preview.
Free online tools · No sign-upOntool — Do more.
Ontool — Do more.
No sign-up.
18 free tools for Markdown, images, video, barcodes, email checks and money maths. Open one and get to work — no sign-up, no account, no paywall.
18
working tools
$0
price to use
0
accounts required
Featured tools
A few of the free tools already in the box.
WRITE
IMAGEImage Compressor
Reduce JPG, PNG and WebP size — or hit an exact target.
DEVBarcode Generator
Create EAN, UPC, Code 39 and Code 128 barcodes.
MONEYEtsy Fee Calculator
See the fees, profit and price behind an Etsy order.
MEDIAVideo Frame Extractor
Pull still frames from a video at intervals or timestamps.
DEVTemp Mail
Get a disposable inbox and watch incoming mail live.
WRITEInvoice Generator
Create a clean invoice and print or save it as a PDF.
WRITEExplain My Report
Translate a medical report into plain English, with quoted evidence.
WRITEParent Translator
Turn a school document into a four-part parent brief in your language.
Why free
Free tools. No sign-up needed.
Ontool is built to get out of your way. Every tool in the box is free to use, with no account, no trial and no sign-up wall before you can start.
- Free to use
- No sign-up wall
- No credit card
- No output watermarks
The toolbox is still growing.
New tools will appear here as they ship. Nothing is paywalled or hidden behind a sign-up.