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12 free tools · no signup

Free tools for marketers and developers

QR codes, UTM builders, OG previews, redirect chasers - all free, all client-side where possible, and all with the same privacy-first rules we apply to Attr.so.

Most popular
QR Code Generator
Generate free QR codes from any URL. Customise colour and size, then download as PNG or SVG.
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URL Shortener
Paste any long link and get a short, copy-friendly version. Sign up free to actually track the clicks.
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UTM Parameter Builder
Build clean utm_source / utm_medium / utm_campaign URLs with smart presets and a live preview.
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Meta Tag / OG Preview
Paste a URL and see how it renders on Twitter, LinkedIn, Facebook, and Slack - with edit suggestions.
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Privacy & power user
Link Privacy Checker
Follow any short link end-to-end and inspect the redirect chain for trackers and suspicious hops.
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Geo-Block Tester
Detect your country, simulate blocking visitors from other regions, and learn how geofencing works.
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UTM Parameter Validator
Validate any URL with UTM parameters - flag missing fields, bad characters, and casing issues.
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QR Code Decoder
Upload any QR code image and see the URL it points to before you click - right in your browser.
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Quick utilities
Link Expiration Calculator
Pick a start date and duration; see when your campaign ends and when to archive the short links.
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Social Media Preview
Edit a title, description, and image - see exactly how it will look on four major platforms.
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Campaign Name Generator
Pick product, channel, and goal - get ten consistent campaign names you can paste straight into UTMs.
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Click Estimate Calculator
Estimate clicks from any audience and CTR, and compare email vs social vs paid in one chart.
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Built by the team behind Attr.so
Privacy-first link analytics. Custom domains. A REST API engineers actually like.
Start tracking free
attr.so

Privacy-first, developer-friendly link management software

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