ImageLabs logo

ImageLabs

User Guide

ImageLabs is a simple, single-image editor: open an image, apply one task at a time, then save the result. Everything runs locally on your PC.

Contents
  1. Getting started
  2. How editing works
  3. Tasks
  4. Saving
  5. Tips
  6. Privacy

1. Getting started

  1. Launch ImageLabs.
  2. Click Open image (top-right) or drag & drop an image onto the window. Supported: PNG, JPEG, BMP, GIF, TIFF, WebP, ICO, TGA.
  3. Pick a task from the left rail, adjust it, then click Apply.
  4. When you're happy, click Save result (bottom-right).

The workspace has three columns:

AreaWhat it does
Tasks (left)Choose what to do: Crop, Resize, Rotate / Flip, Remove Background, Adjust, Watermark.
Preview (center)Shows the current image. A checkerboard means transparent areas.
Task options (right)Settings for the selected task, with an Apply button.

The bottom bar has Undo, Reset, Quality, and Save result.

2. How editing works

  • Edits are chainable: each Apply bakes the change into the image, so you can do several in a row (e.g. crop, then remove the background, then resize).
  • Undo steps back one change at a time. Reset returns to the original opened image.
  • Most tasks show a live preview as you tweak settings — Apply keeps it.
  • Rotate and Flip apply immediately (use Undo to revert).

3. Tasks

Crop

Drag the dashed box and its corner handles on the preview to frame the area, then Apply crop. The panel shows the exact crop size in pixels. The crop is limited to the actual image (the centered area inside the preview).

Resize

Enter a Width and/or Height.

  • Keep aspect ratio — scales proportionally (set just one dimension).
  • Don't enlarge — never scales an image above its original size.

Click Apply.

Rotate / Flip

90° left, 90° right, Flip horizontal, Flip vertical — each applies at once.

Remove Background

Choose a Method:

  • Smart cut-out (AI) — automatically detects the subject. Runs offline.
    • Model: a fast bundled model, or the best-quality model as a ~176 MB one-time download. The status line shows ✓ Ready or Not downloaded with a Download button and progress bar.
    • Use GPU — faster on supported GPUs; falls back to CPU automatically.
    • Edge feather — softens the cut-out edge.
    • Fill background with color — drop the subject onto a solid color instead of leaving it transparent (e.g. white product shots).
  • Remove a flat color — makes one background color transparent. Set the color and a Tolerance (higher removes more shades).

Click Apply. Save as PNG (or WebP) to keep transparency.

If you pick the optional best-quality model and haven't downloaded it, ImageLabs fetches it automatically the first time you press Apply (or use the Download button beforehand). This one-time download needs an internet connection; everything else works offline.

Adjust

Brightness, Contrast, Grayscale, Sepia, Blur, Sharpen — preview live, then Apply.

Watermark

Type the Text, pick a Position, and set Font size and Opacity, then Apply.

4. Saving

Click Save result and choose a location and format in the dialog:

FormatUse it for
PNGTransparency / lossless
JPEGPhotos (smaller; uses the Quality box)
WebPModern, small, supports transparency
BMP / TIFF / GIFCompatibility / specific needs
ICOApp icons — one file with multiple sizes (16–256 px)

The Quality value (bottom bar) applies to JPEG and WebP. Saving to JPEG/BMP flattens transparency onto white.

5. Tips

  • Transparent cut-out: Remove Background → Smart cut-out → Apply → Save as PNG.
  • Make an app icon: open a square image → Save result → choose ICO.
  • Web thumbnail: Resize (e.g. width 512, keep aspect) → Save as WebP.
  • The theme toggle (moon/sun, top-right) switches light/dark and is remembered.
  • About (ⓘ, top-right) shows the version and a link to backendside.com.

6. Privacy

All processing — including AI background removal — happens on your computer. No image or data is sent anywhere.