Lightweight photo editors that run well on older PCs

The best lightweight photo editor for an old PC is usually one you already have or one that asks little of your hardware. Start with the Photos app for quick fixes. Use Pinta, Paint.NET or the browser-based Photopea for everyday edits, and step up to GIMP only when you need its extra tools.

Last updated October 25, 2026 · Requirements checked against each project’s own website

The short version

Quick crops and fixes: the Photos app built into Windows.
Simple layered editing: Paint.NET on Windows, if your processor meets its requirements, or Pinta on Windows, Mac and Linux.
No install at all: Photopea, which runs in your web browser.
Serious editing: GIMP. Krita is excellent too, but it’s built for painting, not photo editing.

All the editors here are free to use. Requirements change with new versions, so check each project’s download page before you install. If your PC has 4 GB of RAM or less, close other programs while you edit large photos. Our RAM guide explains how much is enough.

Microsoft Photos

Built into Windows · Best for quick fixes

Before you install anything, try the Photos app. Open a photo and select Edit image, or press Ctrl+E. Microsoft’s guide lists these tools:

Crop, rotate and flip, including preset aspect ratios
Light and color adjustment sliders, and 15 filters
Markup with pens and a highlighter
Background blur, removal or replacement, and Generative Erase for removing unwanted objects

Copilot+ PCs get extra AI options, which an older PC won’t have. Microsoft updates the Photos app often, and its guide shows the Windows 11 version, so the tools on a Windows 10 PC may differ. Photos doesn’t do layers.

Paint.NET

Windows only · Best for simple layered edits, if your PC qualifies

Paint.NET is an image and photo editor for Windows with layers, special effects and flexible undo. The free version comes from its developer’s website. Buying it from the Microsoft Store is an optional way to support the project.

Check the requirements carefully on an older PC. At the time of writing, version 5.1 needs:

Windows 11, or Windows 10 version 21H2 or newer
A 64-bit processor with at least 4 cores, and AVX2 support on Intel or AMD chips (ARM64 is also supported)
A graphics chip that supports Direct3D 11

If your processor has only two cores or lacks AVX2, current Paint.NET doesn’t meet its stated requirements. Task Manager’s Performance tab shows your core count. Your processor’s page on Intel’s or AMD’s website lists its instruction sets. If your PC doesn’t qualify, try Pinta instead.

Pinta

Windows, Mac, Linux · Best for Paint.NET-style editing on any system

Pinta is a free, open-source drawing and image editor. Its developers describe it as a clone of Paint.NET 3.0 built with the GTK toolkit. It has layers, familiar tools such as crop, resize, clone and magic wand, effects and adjustments with live previews, and unlimited undo.

Version 3.1.2 (April 2026) is available as Windows installers for x86-64 and ARM64, Mac downloads for Intel and Apple silicon, and Flatpak and Snap packages on Linux. The project doesn’t publish hardware requirements.

Photopea

Web browser · Best for no-install editing and opening PSD files

Photopea calls itself an advanced image editor, and it runs in a web browser at photopea.com. It opens and saves PSD files, plus common formats such as JPG, PNG, WEBP and HEIC, and camera raw files including DNG, CR2, NEF and ARW.

Photopea says it processes files on your own computer rather than uploading them, and it can keep working offline once loaded. It recommends a large screen, a mouse or stylus, and a keyboard. The free version shows ads, and a paid Premium account removes them.

Because it runs in the browser, Photopea also works on ChromeOS Flex. Your browser does the work, so a light, up-to-date one helps. Our browser guide compares the options.

GIMP

Windows, Mac, Linux · Best for full-featured editing

GIMP is a free, open-source image editor for photo retouching and restoration, composites, artwork and graphic design. It has far more tools than Pinta or Paint.NET, and it takes more learning.

GIMP 3.2.6 was released on September 10, 2026. The Windows installer needs Windows 10 version 1903 or newer, on x86-64 or ARM64. The Microsoft Store version needs Windows 11. The Mac version needs macOS 11 Big Sur or newer, and Linux users can get it as an AppImage, Flatpak or Snap. GIMP doesn’t publish minimum hardware requirements.

Krita

Windows, Mac, Linux, Android · Best for digital painting, not photos

Krita’s own tagline is “Digital Painting. Creative Freedom.” It’s a good free choice for drawing and painting, especially with a pen tablet. For cropping and correcting photos, Pinta, Paint.NET or GIMP will feel more natural.

Krita needs Windows 8.1 or newer, macOS 10.15 or newer, or Linux, plus OpenGL 3.0 or Direct3D 11 graphics. It lists 4 GB of RAM as the minimum and recommends 16 GB.

digiKam and darktable: for raw photos, with more RAM

Windows, Mac, Linux · Best for photographers who shoot raw

These two are photo management and raw-processing programs rather than quick editors. digiKam calls itself a professional photo manager for importing, organizing, editing and sharing photos, raw files and videos. darktable is a raw developer with non-destructive editing.

darktable is the heavier of the two. Its manual says it needs at least 4 GB of physical RAM plus 4 to 8 GB of extra swap space. When memory runs short, it splits images into tiles, which the manual says can be up to 10 times slower. A PC with 4 GB of RAM is at its stated minimum.

Comparison: which lightweight photo editor fits you

Editor	Platforms	Offline or online	Best for
Microsoft Photos	Windows (built in)	Offline	Quick crops, light and color fixes
Paint.NET	Windows 10 21H2 or newer, 11	Offline	Simple layered edits, if your processor qualifies
Pinta	Windows, Mac, Linux	Offline	Paint.NET-style editing on any system
Photopea	Any modern web browser	Online (keeps working offline once loaded)	No-install editing, PSD files
GIMP	Windows 10 1903 or newer, Mac, Linux	Offline	Full-featured photo editing
Krita	Windows 8.1 or newer, Mac, Linux, Android	Offline	Digital painting and drawing
darktable	Windows, Mac (Apple silicon), Linux	Offline	Raw photos, on PCs with more RAM

Frequently asked questions

What’s the best lightweight photo editor for Windows 10?

Start with the built-in Photos app for quick fixes. For layers, Paint.NET works on Windows 10 version 21H2 or newer if your processor has at least 4 cores and AVX2. If it doesn’t, use Pinta, or GIMP for more advanced work.

Is there a good lightweight photo editor online?

Photopea is the best-known option. It runs in the browser, opens Photoshop PSD files, and says it processes your images locally rather than uploading them. The free version shows ads.

What’s a good lightweight photo editor for Linux or Ubuntu?

Pinta is the simplest choice and installs from Flathub or the Snap Store. GIMP is the full-featured option. If you’re setting up an old PC with Linux, our lightweight Linux distro guide can help you pick one first.

What’s the best free lightweight photo editor?

Pinta is free, open source and runs on Windows, Mac and Linux. Paint.NET is free on Windows from its developer’s website. Photopea is free with ads and needs no installation.