Black and White Filter

Mass grayscale

Batch Black and White Converter

Drop a folder’s worth of images, apply one Rec. 709 black and white baseline with shared presets and sliders, then download converted PNGs as a ZIP - all on your device.

Drop an image or browse

Select multiple images - processed locally, download as ZIP

Images stay on this device. Black and White Filter never uploads photos to a server.

How to batch convert to black and white

Select multiple files, set one look, then export a ZIP.

  1. Select multiple images

    Choose several JPG, PNG, WebP, or HEIC files. They stay in browser memory only.

  2. Pick a shared look

    Set High Key, Balanced, or Low Key plus brightness and contrast for the whole batch.

  3. Preview a sample

    Check one frame, then trust the same settings across the set.

  4. Download a ZIP

    Export converted PNGs bundled together, or reset settings and run again.

What batch conversion does

One tonal baseline applied to many files without uploading a gallery.

Each image is converted with the same luminosity weights and slider values. Use batch mode as a first monochrome pass after culling, then fine-tune keepers on a single-image page if needed.

When batch mode helps

Use it for galleries, client proofs, and consistent social sets.

  • Event culls

    Apply one mono baseline across dozens of frames.

  • Consistent grids

    Match contrast across a series before posting.

  • Not for hero retouching

    Finalize hero images on a single-photo page with tighter controls.

Settings tips for batch mono

Group by lighting before you batch.

Window-light and flash sets often need different contrast baselines. Split batches by lighting to cut rework. Keep grain at zero for a clean production plate.

Related concepts

Batch sits next to grayscale conversion and studio workflow.

  • Baseline plate

    A shared first conversion before per-image polish.

  • Privacy

    Files never leave the browser session for conversion.

  • Single-image fine tune

    Use portrait, landscape, or style pages for keepers.

Black and White Filter · Grayscale Photo Filter · PNG Black and White Converter · HEIC to Black and White · Why private in-browser filters matter

Related guides

Why private in-browser filters matter · Complete guide to using a black and white filter · Black and white filter on Android

Batch Black and White FAQ

How many photos can I convert at once?

Limits depend on your device memory. In practice, start with 20 - 50 mid-resolution photos (or fewer at 20+ megapixels). If previews slow down or the tab runs out of memory, split into smaller batches and run again.

Are files uploaded to a server?

No. Batch conversion runs locally in your browser and the ZIP is built on your device.

Does batch resize my photos?

No. Output keeps each image’s processed canvas dimensions from the converter pipeline.

Can I use different settings per photo?

Batch applies one shared look. Fine-tune individual keepers on a single-image filter page afterward.

Batch convert now

Select multiple photos, set one mono look, download a ZIP.

Processing stays on your device. No sign-up and no watermark.

Back to batch tool