# Tips for processing lots of images fast

URL: https://helpcenter.readypixl.com/articles/performance-tips
Markdown: https://helpcenter.readypixl.com/articles/performance-tips.md
Section: Troubleshooting
Summary: How to make your big batches run faster: browser choice, image sizes, batch sizes, and when to upgrade.

ReadyPixl runs right in your browser. No uploads, no waiting in line on our servers. That's great — but it also means **your computer and your browser do the work.** A few simple choices make big batches much faster.

## Which browser works best

- **Chrome** — fastest. This is what we test on.
- **Edge** — basically Chrome under the hood. About the same speed.
- **Firefox** — works fine, a little slower on big batches.
- **Safari** — works for smaller batches. Has stricter memory limits, so batches over 500 images can struggle.
- **Phone browsers** — OK for small batches and checking results. Not recommended for real work.

For anything over ~200 images in one batch, use Chrome or Edge.

## Don't use images bigger than you need

Bigger images aren't always better — they just take longer.

- **Under 4,000 pixels on the long side** — fastest. Good for most jobs.
- **4,000 to 8,000 pixels** — fine, a bit slower.
- **Over 8,000 pixels** — slow, and usually not needed. Even large prints rarely need more.
- **Over 10,000 × 10,000 pixels** — ReadyPixl won't load these, to keep your browser from crashing.

If your original images are huge — high-resolution AI generations, scanned designs, oversized stock images — shrink them down to 4,000 to 6,000 pixels first. You won't see any difference in quality and the pipeline will run much faster.

## How many images to run at once

- **1 to 50 images** — finishes in under a minute on most computers. No special tricks.
- **50 to 500 images** — the sweet spot. Start the pipeline, walk away, come back to a finished zip.
- **500 to 2,000 images** — works, but watch your browser. Close other tabs. If your browser has been open for days, close and reopen it first.
- **Over 2,000 images** — split into smaller batches. Two runs of 1,000 is easier than one run of 2,000.

## Some tools are slower than others

The heavier tools:

- **Color Removal V2** — looks at every pixel at full quality. Great result, but the slowest of the cleanup tools.
- **Image Adjustment** with lots of sliders turned on — each active slider adds more work.
- **Filters** and **Distress Effects** with strong settings.
- **Resize** making images bigger.

The quick ones:

- **Trim** — scans the edges once, very fast.
- **Reposition** — just moves the image around, very fast.
- **Rotate / Flip** — very fast.
- **Watermark (Text or Image)** — adds one layer, very fast.

**Tip:** if your pipeline has both a Resize (making images smaller) and slow tools, put Resize first. The slow tools will then work on the smaller images, which is faster.

## Don't click away during a big batch

- **Keep the ReadyPixl tab in front.** Browsers slow down tabs running in the background to save power. A pipeline running behind another tab can crawl or stop.
- **Don't refresh or close the tab while it's running.** Processing happens on your computer; closing the tab kills the job.
- **Closing *other* tabs is fine** and usually helps free up memory.

## Save your pipeline as a preset

If you've built a pipeline that works for something you do a lot, click **Save Current Preset**. You only set it up once. Every future run is one click to load the preset, drop in new images, and click Download All.

## When to upgrade

The free browser version is the main product. You might want to upgrade if:

- **Chrome extension** (free with a free account, 10 downloads a day; Pro removes the cap) — best if you spend lots of time on sites like ChatGPT, Gemini, Grok, Kimi, Ideogram, or stock image sites. The extension puts a ReadyPixl button right on the images on those sites, so you can skip the "download one website, upload to another" dance. It also removes the ads in the web version.
- **Desktop app (paid)** — same ReadyPixl, packaged as an app for Mac and Windows. The big perk is a **free, offline AI upscaler** (no per-image credits). It also runs without internet and never shows ads.

The free web version keeps getting better whether you upgrade or not.

## What to read next

- **[Common errors](common-errors)** — the most common error messages and fixes
- **[Browser and computer issues](browser-and-computer-issues)** — when the editor itself feels slow
- **[Per-tool quirks](per-tool-quirks)** — when one specific tool is the bottleneck