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Tutorials

Step-by-step guides for the jobs that send you looking for a tool in the first place. Each one ends with the exact settings to use.

Compress a photo to an exact file size

When a form demands 20 / 50 / 100 / 200 KB, percentages are useless. How to hit the number every time.

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Image sizes for every social platform

Exact pixel dimensions for Instagram, YouTube, Facebook, X, LinkedIn, Etsy, Shopify and Pinterest.

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Generate a QR code locally

Wi-Fi passwords, business cards, restaurant menus, payment pages. Make a code with nothing leaving your device.

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Count words and characters (and what counts)

For essays, captions, character-limited forms and social posts. Includes the difference between characters and bytes.

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Clean up text pasted from the web

Strip smart quotes, zero-width characters, double spaces, footnote markers, and other copy-paste wreckage.

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Compress a JPEG to exactly 100 KB

Upload limits that say "100 KB max" are common on government and job portals. How to land under it without making the photo unusable.

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Passport and visa photo limits

Three separate checks decide whether your upload is accepted, and confusing pixels with kilobytes is the usual reason it fails.

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Compress a photo to the exact size your form asks for

Type the KB limit from the form and get a file just under it. No upload, so your passport photo stays on your device.

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If a form rejected your file, start with compressing to an exact size — and if the limit was specifically 100 KB, the 100 KB version has the exact quality steps. If you are preparing images for a website or shop, read the format guides first — choosing the right format usually saves more than compressing harder. And if you are about to share something private, spend six minutes on photo metadata before you send it.