Batch settings only — not per-photo focus. Tap a name to rename ·
import adds a copy if names clash
Photos
Drag & drop or click
Nothing is uploaded to our servers.
Drop photos on the left, or choose files. Nothing is uploaded.
Mode
JPEG quality
82%
Hold to see original
White balance
Intensity
70%
Drag to reframe
Rotate & flip
Focus
Watermark
Color
Position
Names
Sort
Results
0 / 0 (0s)
All processing happens in your browser. Nothing is uploaded.
Features
Process the batch, not one photo at a time
Import to export is a single pass: size, color, layout and watermark are all decided on one screen, with the result visible the whole time.
Hit the size you need
Name a target file size and OncePic finds the best quality for it — no more guessing at JPEG quality sliders.
Resize everything at once
Export by long edge — 1280 for chat, 1920 for web, 2560 for large prints — or keep the original size.
Per-photo auto white balance
Each photo’s color cast is corrected first, then a shared look is applied, so the batch reads as one set.
Crop and focus
Lock one aspect ratio and set a focal point per photo, so faces and products never get cut off.
Optional watermark
Font, size, color and placement are adjustable per photo — add it only when you want branding on the shot.
Save reusable presets
Store the whole setup as a preset and apply it to the next event or product drop in one click.
Your photos stay on your machine
Every compression, color tweak and crop runs locally in the browser — ideal for unreleased products, client events and internal material.
No uploads
Photos never leave this tab — there is no server-side copy.
No account
Open the URL and go. No sign-up, no tracking of your work.
Closes clean
Close the tab when you are done and the temporary data is gone instantly.
Frequently asked questions
What format does OncePic export?
OncePic always exports JPEG, chosen for the most predictable size-to-quality ratio across photo batches.
How many photos can I process at once?
There’s no hard limit — it depends on your device’s memory. Most laptops handle a few hundred photos comfortably.
What is the Preset menu?
Pick a built-in Scenario to start fast — Compress & balance (500 KB + auto WB), Warm for web (Soft Warm · 1920px), or Square soft (1:1 crop). After export, save your own setup under My presets.
Can I reuse my settings?
Yes, save your size, color, layout and watermark choices as a preset and apply them to future batches in one click. Per-photo focus is not saved.
Does it work on mobile?
Yes, the same workflow adapts to phone and tablet screens, though large batches are faster on desktop.
Batch photo tools in your browser
OncePic is a free online tool to batch compress photos, resize
for chat or web, auto white-balance, apply a color look, crop and
rotate, add an optional watermark, then export JPEG — in one pass. Output is
always JPEG (including PNG imports); transparency is not kept.
Processing runs in this tab on your device; we do not upload your
files to our servers.
Batch compress photos and aim for a target file size
Resize by long edge (chat, web, or keep original)
Auto white balance per photo, then optional color look
Crop, rotate, and set focus before export
Optional watermark with font, color, and per-photo position
