Choose your images
Drop JPG, PNG or WebP files into the tool, or select them from your device.
Free browser image optimizer
Smaller images. Same sharp quality.
Resize and compress JPG, PNG and WebP images instantly. No upload, no signup and no watermark.
100% private. All processing happens locally in your browser. Your files stay on your device.
Format
Compression goal
Very small targets can also reduce dimensions.
Drop images here
or
JPG, PNG or WebP · Up to 20 files · 50 MB eachPrivate by designImages never leave your device
Fast batch toolsOptimize multiple files together
Free to useNo account, limit wall or watermark
13 focused tools
Every image job has its own page
Choose a dedicated tool with clear settings, private browser processing and a direct download.
Compress ImageCompress JPG, PNG and WebP images to a target file size in KB or MB. Use the size slider or quality control privately in your browser.Resize ImageResize an image online by pixels while preserving its aspect ratio. Change JPG, PNG and WebP dimensions privately and download instantly.Crop ImageCrop JPG, PNG and WebP images online with precise pixel controls. Remove unwanted edges and download the selected area privately.Convert to JPGConvert PNG, WebP, SVG and browser-supported images to JPG online. Choose JPEG quality and flatten transparency onto a clean background.Convert from JPGConvert JPG images to PNG or WebP online for free. Create a modern web format or lossless PNG privately in your browser.Rotate ImageRotate images online by 90, 180 or 270 degrees and flip them horizontally or vertically. Process JPG, PNG and WebP files privately.Photo EditorEdit photos online with brightness, contrast, saturation, blur, grayscale, sepia and text controls. Download edits without uploading your image.Upscale ImageUpscale an image online to 2x, 3x or 4x its original dimensions with high-quality browser resampling. No upload or account required.Remove BackgroundRemove a plain image background online by selecting its color and tolerance. Create a transparent PNG privately in your browser.Watermark ImageAdd a text watermark to images online. Control its size, opacity and position, then download your protected JPG, PNG or WebP image.HTML to ImageConvert an HTML snippet to a PNG image online. Set the canvas size and background, preview the result and download it directly.Blur FaceBlur a face or private area in a photo online. Position the blur box, control its strength and download the protected image privately.Meme GeneratorCreate a meme online from your own image. Add bold top and bottom captions, adjust text size and download the finished meme privately.
Three simple steps
How to compress an image online
Get a lighter image in seconds without sending it to a server.
Tune the output
Pick a format, target a file size in KB or MB, or set quality and optional dimensions.
Download the result
Compare the file sizes, then download one image or the whole optimized batch.
Built for useful results
Everything you need. Nothing uploaded.
Compress without guesswork
Target a maximum size in KB or MB, or use quality control for manual tuning. ResizeImg shows the exact result after processing.
Resize for the web
Use quick percentage presets or fit every image inside custom width and height limits while preserving its aspect ratio.
Convert modern formats
Turn compatible images into JPG, PNG or WebP. WebP is often a practical choice for lighter website images.
Process a batch
Apply the same settings to multiple images and download the finished files without repeating the workflow.
A practical guide
Choose the right format and quality
Good compression is not simply the lowest possible quality setting. The best result is the smallest file that still looks clean at the size where people will view it.
For photographs, JPG or WebP usually provides a strong balance. PNG is useful when you need transparency, crisp interface graphics or lossless output. Start around 80% quality for photos, inspect edges and fine textures, then reduce gradually.
FormatBest forTransparency
JPGPhotos and social postsNo
PNGLogos and interface graphicsYes
WebPModern websites and appsYes
Common questions
Image compression FAQ
Are my images uploaded anywhere?
No. ResizeImg uses your browser's built-in image tools, so the selected files remain on your device. Closing or refreshing the page clears the current session.
Does compression change image dimensions?
Not unless you choose a resize option. The quality control changes encoding quality, while the resize control changes pixel dimensions.
Which image format creates the smallest file?
It depends on the image. WebP and JPG are commonly efficient for photographs, while PNG is better when transparency or lossless detail matters.
Can I use the optimized images commercially?
ResizeImg does not claim rights to your files. You remain responsible for having permission to use the original image and its optimized version.
Why can the result sometimes be larger?
Converting a simple image to an unsuitable format or choosing very high quality can increase its size. Try WebP or JPG, lower the quality slightly, or reduce the dimensions.
About ResizeImg
A focused image tool that respects your files
ResizeImg was designed for people who need lighter website images, email attachments, marketplace photos and social media assets without creating an account. The tool performs its main job locally, keeps controls understandable and explains what each setting changes.
Compress an image