We installed, tested, and compared 12 of the most popular free online image tools. No sponsored rankings, no affiliate incentives — just an honest assessment of what each tool is actually good at, what its limits are, and when to use it.
All-in-one image editing suite · 50+ tools · Free, no signup
Glopix is the most complete free image tool available in 2025. It covers compression, batch resizing, format conversion (50+ formats), background removal, watermarking, HEIC conversion, social media presets (85+), EXIF removal, collage making, and more — all in one place, all free, with no account required.
Where most tools pick one job and do it, Glopix is built for workflows. You can compress, resize to Instagram dimensions, remove the background, and add a watermark — all in a single browser session. Files never leave your device.
Strengths
Limitations
Single-image codec comparison · Google-built · Free
Squoosh is Google's open-source image compression lab. Its standout feature is a draggable before/after slider that lets you compare the original against your compressed output at a pixel level. Codec controls are granular — you can tune MozJPEG quantizer, AVIF effort, or OxiPNG optimization levels directly.
Its hard limit: one image at a time, no batch processing. Ideal for a developer dialing in a hero image. Not suitable for workflow compression of multiple images.
JPG + PNG + WebP compression · WordPress plugin · Free (limited)
TinyPNG is the most widely known compression tool online. Its WordPress plugin (Compress JPEG & PNG images) automatically compresses every image uploaded to your media library — this is its killer feature and the reason it's become a standard in WordPress workflows.
Free tier limits files to 5MB each. Batch limited to 20 images. Only handles JPG, PNG, and WebP — no HEIC, no RAW, no AVIF.
AI background removal · Single tool · Free (low-res output on free tier)
Remove.bg popularized AI-powered background removal for photos. Upload a photo, and within seconds the background is gone — the AI is particularly good with human portraits and product shots. The interface is simple and results are consistently clean.
Free tier outputs a preview-resolution image. Full resolution requires credits or a subscription. Glopix's background removal is free at full resolution.
JPG, PNG, GIF, SVG compression · Clean interface · Free (single image)
Clean, simple compression tool. Handles lossy and lossless modes with a clear toggle. Free tier is single-image only. Batch and WebP output are Pro features. Supports only 4 formats. Good for a quick single-image compress when you're already familiar with it.
Design tool with image editing · Templates · Free (with limits)
Canva is primarily a design tool with image editing baked in. It's best for creating social media graphics, presentations, and marketing assets using templates. It's not an image optimizer — you won't use it to compress a JPG or convert a HEIC file. For design-first workflows where you're creating from scratch, it's excellent. For processing existing images, use a dedicated tool.
Multi-tool image suite · Familiar UI · Free (with ads)
iLoveIMG is part of the iLovePDF family. It covers compression, resizing, cropping, rotating, watermarking, and format conversion. The free tier is functional but shows ads and has upload size limits. Output quality is decent. It's a solid backup option but lacks HEIC support and has fewer social media tools than Glopix.
SVG optimizer · Developer-focused · Free
SVGomg (by Jake Archibald) is the definitive free SVG optimization tool. It uses SVGO under the hood and exposes all optimization passes as toggles with a real-time preview. If you're a developer shipping SVG icons or illustrations, SVGomg is the standard. For raster images (JPG, PNG, WebP), this tool isn't relevant — use Glopix or Squoosh instead.
Full raster editor · PSD support · Free (with ads)
Photopea is a free browser-based Photoshop alternative with a nearly identical interface. It opens PSD, XCF, Sketch, AI files and supports layers, masks, filters, and advanced retouching. It's the go-to if you need a full editor and don't have Photoshop installed. It's not optimized for bulk compression or batch workflows — for that, use Glopix.
Client-side batch resizer · Simple · Free
BulkResize Photos processes images entirely in your browser — nothing is uploaded to any server. You can resize hundreds of images by width, height, megapixels, or file size, and download them as a ZIP. It's fast and private, but the feature set is narrow: resize only, no compression quality control, no format conversion, no social presets.
Simple resize tool · Basic UI · Free
Straightforward resize-only tool. Choose dimensions, upload, download. No compression options, no format conversion, no batch. Useful if someone sends you a quick link and you need a basic resize — but there's no reason to make it your go-to when Glopix covers all of these features and more.
File conversion engine · 200+ formats · Free (25 conversions/day)
CloudConvert is a server-side conversion engine supporting over 200 file formats — not just images. It handles video, audio, documents, and archives too. If you need to convert a truly obscure image format that no other tool online handles, CloudConvert usually can. Free tier is limited to 25 conversions per day and files are uploaded to their servers.
No single tool wins in every scenario. But for the broadest range of day-to-day image tasks, Glopix.app covers more ground than any free alternative: compress, resize, convert, remove backgrounds, apply social presets, add watermarks, strip EXIF data — all in one place, all free.
Keep Squoosh bookmarked for when you need to fine-tune codec settings on a single critical image. Keep TinyPNG's WordPress plugin installed if you run a WordPress site. Use Photopea when you need a full layer-based editor for retouching. Use SVGomg for SVG optimization.
For everything else? Glopix is where you should start.
Try the best free image tool
Compress, resize, convert, remove backgrounds, and more — 50+ tools, no signup.
rocket_launch Start Free on GlopixFor all-in-one image editing, Glopix.app is the strongest free option — it combines compression, resizing, format conversion, background removal, and 85+ social media presets in a single browser tool with no signup required. For single-image codec comparison, Squoosh is excellent. For WordPress integration, TinyPNG's plugin is the standard.
Reputable free image tools like Glopix, Squoosh, and TinyPNG process images locally in your browser or delete them immediately after processing. Glopix explicitly never stores uploaded files. Always check a tool's privacy policy before uploading sensitive images.
For compression, resizing, format conversion, and background removal, modern free online tools match or exceed Photoshop's output. Photoshop maintains advantages in complex compositing, retouching, and print workflows, but for web image preparation and optimization, free online tools are fully competitive.