Guides

Guides for getting images ready

Practical guides on choosing a format, compressing well and preparing images for the platforms you publish to. Each one links to the tool it describes.

How to choose between JPG, PNG and WebP

Decide by what the image contains: photos, flat graphics with text and transparency each point to a different format.

How to compress images without losing visible quality

Work towards the size limit the platform enforces, judge the result at full size, and resize before you compress.

Turn a transparent PNG into a JPG without ugly edges

JPG cannot keep transparency, so pick the colour behind your artwork instead of letting a converter choose black.

Resize images without stretching them

Pick one side or a percentage, let the other side follow, and crop first when the target shape is different.

Work through a batch of images without losing track

One queue, one set of settings, an honest status per file, and a ZIP that never overwrites a name.

Where your images actually go in a browser tool

Upload-free is a claim, not a proof. What still touches the network, what is stored, and how to check it yourself.

The tools behind these guides

Every guide links to a tool you can use right away. Nothing is uploaded: the work happens on your device.

Compress images — Reduce JPG, PNG and WebP file sizes in your browser.
Convert images — Convert JPG, PNG and WebP images without uploading them, with a background color for JPG results.
Crop images — Crop one JPG, PNG or WebP image to a fixed ratio without uploading it.
Resize images — Scale images by width, height or percentage in your browser.
Watermark images — Add the same text watermark to a batch of images without uploading them.
Images to PDF — Combine JPG, PNG and WebP images into one PDF without uploading them.