Batch edit photos online: copy, sync and export many at once

What batch editing in Lightframes is for

Batch editing in Lightframes means editing one photo and applying the same settings to many others, then exporting them all together. It is for anyone with a set of similar pictures: a wedding or event shoot, product photos under the same light, a holiday set shot at golden hour, or a series you want to post with a consistent look. It works on JPEG, PNG and camera RAW files, runs in the browser, and is free and open source.

How it works, and where your photos stay

Every step runs on your own device: photos are decoded, edited and encoded in your browser, using WebAssembly for RAW files and Web Workers for the image processing, and nothing is uploaded. Edits are non-destructive. Each photo stores its settings, and new files are only created when you export, so the originals are never changed. The open photos and their edits are saved in the browser’s local storage, so a page refresh brings your batch back. After the first visit, this kind of editing also works offline.

Three ways to apply edits to many photos

Copy and paste

Copy edits (Ctrl/Cmd+C) takes the settings of the active photo. Paste edits (Ctrl/Cmd+V) opens a dialog that applies them to every selected photo except the source. You choose exactly which groups to paste:

Group	What it carries
Light	Exposure, contrast, highlights, shadows, whites, blacks
White balance	Temperature, tint
Presence	Texture, clarity, dehaze, vibrance, saturation
Tone curve	Master and RGB curves
HSL	Hue, saturation and luminance of eight colour bands
Color grading	Shadow, midtone, highlight and global wheels
Detail	Sharpening, luminance and colour noise reduction
Vignette & grain	Vignette amount and midpoint, grain amount and size
Look (LUT)	A .cube LUT and its strength
Masks*	Local adjustments
Crop & rotate*	Crop, straighten, rotation
Spot removal*	Healing and clone spots
Background*	Background removal mode

*Off by default, because they depend on the framing of the original photo. All, None and Defaults buttons speed up the choice, and the dialog remembers what you ticked last time.

Sync from the active photo

If nothing has been copied, Paste edits uses the active photo as the source. Select a group of photos, click the one you edited so it is active, and paste: its settings go to the rest of the selection.

Presets on a selection

Applying a preset from the Presets tab affects every selected photo, and the Intensity slider (0–100%) adjusts all of them together. See photo presets for saving and importing looks.

Selecting and sorting photos

• Click a thumbnail to make it active; Ctrl/Cmd-click adds or removes it from the selection; Shift-click selects a range.
• Ctrl/Cmd+A selects every photo in the filmstrip.
• On touch screens, long-press a thumbnail to select several.
• Rate with 1–5, flag with P (pick), X (reject) or U (clear), and filter the filmstrip to show only picks or a minimum star rating before you select.

Batch export

With several photos selected, Export applies the same options to all of them:

• Format: JPEG, PNG or WebP, with quality 50–100 for JPEG and WebP.
• Size: Original (up to 8192 px), Web (2048 px long edge), IG 4:5 (1080 × 1350), IG 1:1 (1080 × 1080), Story (1080 × 1920), or a custom long edge.
• A filename pattern such as {name}-edited, an optional text watermark, and optional AI upscaling.

A single photo downloads as a file. Several photos download as one ZIP, so your browser doesn’t fire dozens of separate downloads. For carousels or collages built from the same set, see the Instagram carousel maker.

Tips

• Pick a representative photo as the source: average exposure, typical white balance.
• Paste only global groups (Light, White balance, colour) across a mixed set, then fine-tune exposure per photo.
• Save the finished look as a preset so the next shoot starts from it.

Limitations

• Exports run one photo at a time in the browser tab. Big RAW batches can take several minutes, and the tab needs to stay open until the ZIP downloads.
• Very large batches are limited by your device’s memory. A desktop handles them better than a phone.
• Opening a folder needs a Chromium-based browser (Chrome, Edge, Brave); other browsers can still select many files with Open.
• Pasting doesn’t adapt settings to each photo. If exposure varies a lot across the set, adjust those photos individually after pasting.

More answers about privacy, offline use and browsers are on the FAQ page.