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.

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