Image Batch
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Edit · Browser-local batch tool

Convert Image to Grayscale

Create black-and-white image copies using a luminance-based grayscale effect. Keep dimensions and process a batch locally.

Ready-to-use presetLive pixel previewIndividual files or ZIP

or drop your images here

JPEG, PNG, WebP, HEIC & AVIF · 50 files · 40 MB each
Open empty studio
Terracotta mug sample available to try in the editor
Your files. Your device.

How it works

From source files to finished batch

01

Choose your source images

Select images to open convert image to grayscale in the studio. The matching workflow and preset are selected automatically; you can still change them before export.

02

Review the preset

The preset removes color using weighted red, green, and blue luminance. Add brightness or contrast adjustments earlier in the workflow to tune the monochrome treatment.

03

Process and save copies

Preview the selected image, then process the whole batch. Compare the real dimensions and encoded size before saving individual results or one ZIP. Your originals are not overwritten.

Common uses

Built for everyday image work

A focused edit workflow

Create black-and-white image copies using a luminance-based grayscale effect. Keep dimensions and process a batch locally.

One image or a whole folder

Use the same settings across up to 50 files. Check unusual compositions or mixed-resolution images before processing the batch.

Combine with other edits

Add resize, crop, rotate, color, watermark, or compression steps in the studio. The workflow runs in the displayed order and shares one final output format.

Worth knowing

Keep the output predictable

Choosing the right settings

The preset removes color using weighted red, green, and blue luminance. Add brightness or contrast adjustments earlier in the workflow to tune the monochrome treatment.

Format and quality limits

Grayscale output still uses a standard JPEG, PNG, or WebP image container. It is not a specialized single-channel medical or scientific image export.

Local processing and source limits

Files stay in browser memory. Each source can be up to 40 MB, within the 16,384-pixel edge and 80-megapixel canvas limits. HEIC uses the first contained image; AVIF requires browser decoding. Export is JPEG, PNG, or WebP, not HEIC or AVIF.

Keep working

Related image tools

Rotate Images Online

Rotate images 90°, 180°, or 270° and save the actual rotated pixels. Apply one orientation change to an entire batch.

Flip Images Online

Mirror images horizontally or vertically and export the flipped pixels. Combine flips with rotation when you need both changes.

Adjust Image Colors

Change brightness, contrast, and saturation together across a batch. Preview the real pixel treatment before exporting.

Brighten Images Online

Lighten dark photos with a brightness preset and a live result preview. Apply the same treatment to several images at once.

Browse all image tools

FAQ

Convert Image to Grayscale questions

How do I use convert image to grayscale?

The preset removes color using weighted red, green, and blue luminance. Add brightness or contrast adjustments earlier in the workflow to tune the monochrome treatment. Choose images above to load these settings automatically, or open the empty studio to adjust them first.

What should I check before downloading convert image to grayscale results?

Grayscale output still uses a standard JPEG, PNG, or WebP image container. It is not a specialized single-channel medical or scientific image export.

Does choosing images upload them?

No. The editor decodes and processes image files on your device. It loads its code from this website, but does not send your image contents to an image-processing service.

Ready when you are

Your next batch starts here.

Convert Image to Grayscale. No image uploads.