Image Compressor

This image compressor reduces JPG, PNG, and WEBP file size in seconds. Batch files, keep filenames, and download results fast. Upload one image or a full batch, compress, then download smaller files that load faster and share easier.

Use the image compressor below, then follow the settings guide to get the smallest size without ugly artifacts.

or drag & drop here
Images are uploaded securely, never shared with 3rd parties,
and deleted once the download link expires.
Metadata may include camera info, date, and GPS location. Uncheck to try to keep it.
readygo tools compressor

Table of contents

What this tool does

Big images slow down websites, hurt user experience, and can reduce conversions. Large attachments also fail to send, bounce, or get blocked. This image compressor reduces file size so your images load faster, upload easier, and take less storage. Typical uses
  • Speed up website pages (better performance + SEO)
  • Reduce ecommerce product gallery weight
  • Send images by email without size limits
  • Batch compress a folder of images in one go

Best times to compress images

Use an image compressor when:
  • Your image is “too big” for a website upload or form
  • Pages load slowly because of heavy images
  • You’re posting lots of product photos or portfolio images
  • You want faster mobile loading (bandwidth matters)
Skip compression (or be careful) when:
  • You are saving a master file for future editing (keep originals)
  • The image has small text/UI and you need it razor sharp (use PNG, compress lightly)
  • You’re already working with a tiny file size and compression won’t help much

Lossless vs lossy (quick comparison)

Feature Lossless Lossy
Image quality Same pixels (no visible change) Can change pixels (depends on quality)
Best for Logos, text, screenshots, graphics Photos, gradients, complex images
File size savings Small to medium Medium to large
Risk Usually safe Artifacts if quality is too low
Common formats PNG (lossless), WEBP (lossless mode) JPG (lossy), WEBP (lossy mode)

A simple rule that holds up in real use: photos → lossy, text/screenshots → lossless.

Use cases (Website, Email, Ecommerce, Social)

Website speed

If your pages feel slow, images are usually the biggest problem. A good image compressor can cut page weight fast. For photos, compress JPG/WEBP with sensible quality. For graphics and text, compress PNG lightly or keep it PNG.

Ecommerce product galleries

Product pages often load 10–40 images. Compressing those images reduces total page weight and makes scrolling smoother. If your images are huge, resize first, then compress.

Email attachments

If an email keeps failing to send, compressing the images is usually the quickest fix. JPG at 80–90 is often enough.

Social media and messaging

Many platforms re-compress uploads anyway. Starting with a clean, reasonably compressed image can reduce “double compression” damage.

How to compress an image

  1. Upload one or multiple files in the tool above.
  2. Pick settings (quality and “don’t enlarge” are the big ones).
  3. Click Process.
  4. Download each file or download a ZIP (if enabled).
Batch compression is the normal workflow for real-world use. This image compressor is built so the goal is: upload once, download once, done.

Best settings (quality, formats, resizing)

1) Quality (for JPG/WEBP)

Quality controls how aggressive compression is. Lower quality means smaller files, but also more artifacts. If you want fast results without guessing, start at a safe value and adjust only if needed. Recommended starting points
  • 92–95: client work, important photos, minimal risk
  • 85–91: best balance for most websites
  • 75–84: smaller files, some detail loss
  • Below 75: only when file size is the top priority

2) Don’t enlarge (recommended)

Leave “Don’t enlarge” on. Compression never adds detail, and upscaling can make images softer. If you need bigger dimensions, resize separately and understand it will not create real detail.

3) Keep filenames + ZIP download

For batches, preserve filenames so you can match files back to originals. ZIP download is best for speed.

4) Resize before you compress (when it matters)

If your image is much larger than needed (example: 6000px wide photo for a 1200px layout), resize first. Resizing often saves more size than lowering quality. Use: Image Resizer

5) Format tips (JPG vs PNG vs WEBP)

  • JPG photos: compress with quality ~85–90 for web.
  • PNG screenshots/logos: compress lightly (lossless). Avoid converting to JPG unless you accept artifacts.
  • WEBP for websites: often smaller. If you need compatibility, convert back: WEBP to JPG converter

Quality vs file size (mini guide)

Websites (photos)

  • Start at 88
  • If it still looks clean, try 85
  • If artifacts show up, raise to 90–92

Ecommerce galleries

  • Start at 85–90
  • Resize oversized originals first
  • Keep packaging text sharp (raise quality if needed)

Screenshots + text

  • Prefer PNG and compress losslessly
  • If you must use JPG, keep quality 92–95

Email attachments

  • Start at 80–88
  • Use JPG for photos; use PNG for screenshots/logos

Common issues (and fixes)

“My image looks pixelated / blocky”

Most common causes:
  • Quality set too low (lossy compression too aggressive)
  • You compressed a screenshot/logo as JPG
Fix:
  • Raise quality (try 85 → 92)
  • Keep screenshots/logos as PNG and compress losslessly
  • If you need smaller size, resize first instead of crushing quality

“The file size didn’t drop much”

Some images are already optimized, or they contain heavy noise/texture. Lossless compression also has a hard limit on savings. Fix:
  • Try a slightly lower quality (92 → 88)
  • Resize to the real display size
  • Consider converting JPG → WEBP for websites: JPG to WEBP converter

“Colors look different after compression”

Slight shifts can happen with profiles/metadata or platform re-compression. Fix:
  • Use a higher quality
  • Compare on the target platform (some platforms re-encode uploads)

“My PNG got bigger”

PNG is lossless. Sometimes a PNG is already well-optimized, and re-saving can increase size. Fix:
  • Try a different setting (lossless level) if available
  • If the PNG is actually a photo, convert it to JPG instead: PNG to JPG converter

Image compressor FAQ

Does an image compressor reduce quality? It depends. Lossless compression should not visibly change the image. Lossy compression can reduce quality if you push it too far. What quality should I use? For most websites, 85–90 is a strong starting point for photos. For important images, use 92–95. For screenshots/text, keep PNG and compress lightly. Can I compress multiple images at once? Yes. Batch compression is supported. If ZIP download is enabled, download everything in one click. Will compressing improve SEO? Indirectly. Smaller images can improve page speed and user experience, which helps performance signals. (Still optimize titles/alt text and use proper formats.) Should I resize or compress first? If the image is oversized, resize first, then compress. Resizing often saves more size than lowering quality. Use: Image Resizer Is this image compressor free? Yes. No signup is required.

References

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