MediaLab — Client-side image studio for social creators

How to use MediaLab

Load PNG / JPG / WebP — one file, a multi-selection, or a whole folder. Drop them on the canvas, use Choose files / Folder, or paste with Ctrl+V. Open images appear in the filmstrip under the canvas; click one to edit it, and each keeps its own undo history.
Edit many at once by switching on Apply edits to all N images in Source image. Every Apply then runs on the whole set, and one Ctrl+Z takes it back off all of them. Export them together with Download all as .zip.
Remove a background colour — open the tool, click Eyedropper then click that colour on the image, and raise Threshold until the background disappears. Invert keeps only the picked colour instead.
Fade the whole image with the Transparency slider; the checkerboard toggle shows what is actually see-through.
Crop by dragging the box or its handles. Pick a ratio preset to lock the shape. Enter applies, Esc cancels, arrow keys nudge (hold Shift to resize).
Frame it — choose an Instagram ratio; the canvas grows to that shape, centres your image and fills the rest with the border colour. Add an inner overlay border on top with its own colour, thickness and corner radius.
Export as PNG (keeps transparency) or JPG (flattened onto a colour you choose), then hit Download.

Shortcuts: Ctrl+Z undo · Ctrl+Shift+Z redo · Ctrl+S download · Enter/Esc confirm or cancel the active tool.

Everything runs in this tab using the Canvas API — no upload, no server, no network. Works offline once the page has loaded.

Drop files or a whole folder anywhere on the canvas, or paste with Ctrl+V. Nothing leaves your device.

Target colour

Click the eyedropper, then click the background on the preview.

Threshold18

Higher = removes a wider range of similar colours. Start low and creep up.

Edge softness12

Feathers the cut-off so edges do not look jagged.

Invert selection (keep only this colour)

Opacity100%

Fades the whole image uniformly — handy for watermarks and layered posts.

Checkerboard backdrop

Aspect ratio

Drag inside the box to move it, grab a handle to resize. Enter applies · Esc cancels · arrow keys nudge (Shift+arrows resize).

Canvas ratio

The canvas grows to this exact ratio, your image is centred at full resolution and the rest is filled with the outer border colour.

Outer border On

Colour

Thickness40 px

Style

Radius0

Overlay border (inner) On

Colour

Thickness10 px

Inset from edge24 px

Style

Radius0

Clip image to overlay corners

Format

Filename

Tip: Ctrl+S downloads the current image with these settings.

MediaLab runs 100% locally · Canvas API · no uploads

Drop images to start

One file, a whole selection, or an entire folder — or paste from the clipboard.

PNG · JPG · WebP · GIF (first frame) — handles 4000×4000 and larger