100% Free · No Signup · 7 Powerful Tools
4.8/5 · 4,200+ happy users · 4.2M+ images compressed

Compress Images Online Free

Reduce JPG, PNG & WebP up to 90% smaller — plus convert formats, resize, add watermarks, batch compress & convert Image ↔ PDF. Free, no signup, no limits.

🗜️ Compress 🔄 Convert 📦 Batch ZIP ↔ Resize 🖊️ Watermark 📄 Image→PDF 🖼️ PDF→Image

Drop your image here

or browse files from your device

or press Ctrl+V to paste
JPG PNG WEBP GIF Max 20MB

Preview
🗜️ Smaller file 🖼️ Higher quality
Estimated time:

Compressing your image...

Original

Compressed

Saved

Original image
Compressed image
Original Compressed
← Drag to compare →
File size reduction
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Format
Dimensions
Quality
File

Drop your image to convert

or browse files from your device

or press Ctrl+V to paste
JPG PNG WEBP GIF Max 20MB

Preview

From

To

Images are converted at high quality (90%). Use the Compress tab to reduce file size.

Converting your image...

Original

Converted

Format

Output Format
Dimensions
Original Size
File

Batch compress up to 20 images

Drop multiple files or browse files

JPG PNG WEBP Max 20 files · 20MB each

Total:

Processing batch…

Processed

Total Saved

Avg Reduction

Results

Resize your image

or browse files

Exact size · Percentage · Fit width/height

·

Output:
px
px
× px

Resizing your image...

Original

Resized

Dimensions

Add Watermark

Text watermark with full customization

Click to select image

JPG, PNG, WebP · max 20MB

Applying watermark…

Watermark applied!

Compress from URL

Paste image URL to compress

Fetching and compressing...

Original

Compressed

Saved

Image → PDF

Convert image to PDF document

Click to select image

Generating PDF...

PDF ready!

PDF → Image

Convert PDF page to image

Click to select PDF file

Max 20MB

Converting PDF...

Size

Dimensions

⭐ Rated 4.8/5 by over 4,200 users  ·  🔒 Files auto-deleted within 30 minutes  ·  🌍 Used in 180+ countries

How to Use Our Image Tools

Three simple steps — done in under 10 seconds

Step 1

Choose a Tool & Upload

Select Compress, Convert, Resize, Batch, Watermark, or PDF from the tabs. Drag & drop, browse, or paste with Ctrl+V.

Step 2

Adjust Settings

Set quality (10–90%), target format, resize dimensions, watermark text, PDF page size, or other tool-specific options.

Step 3

Download Result

Click Download to save your processed image. For batch jobs, download all results as a single ZIP. See stats instantly.

Rated 4.8/5 · 4,200+ reviews

What People Are Saying

Real users. Real results.

"Best free image compressor I've found. Batch compression with ZIP download is a game changer for my workflow. Way better than TinyPNG for my needs."

S

Sarah K.

Web Designer

"Compressed a 4MB PNG screenshot down to 600KB with zero visible quality loss. The before/after slider is really helpful. No signup needed — perfect."

M

Marcus T.

Blogger

"The watermark tile mode looks professional — font options, rotation and opacity control make it just as good as paid tools. Highly recommend!"

P

Priya M.

Photographer

"Improved my Google PageSpeed score from 62 to 94 using the batch compressor. Compress 15 images at once and download as ZIP. Brilliant tool."

J

James W.

Developer

All-in-One Image Toolkit

7 professional-grade tools, completely free — no account needed

Image Compressor

Reduce JPG, PNG & WebP file sizes up to 90% with adjustable quality. Includes before/after comparison slider.

Format Converter

Convert between JPG, PNG, and WebP at high quality. Ideal for switching to modern web formats.

Batch Compressor

Upload up to 20 images at once. Compress all in parallel and download a single ZIP with one click.

Image Resizer

Resize by percentage, max width, max height, or exact dimensions. Aspect ratio preserved automatically.

Watermark Tool

Add custom text watermarks with adjustable position, opacity, and font size. Protect your images instantly.

Image ↔ PDF

Convert images to PDF (A4, A3, Letter) or extract PDF pages as JPG, PNG, or WebP images. All in seconds.

URL Image Compressor

Paste any public image URL to compress it instantly — no upload needed. Great for optimising images hosted on the web.

Popular Use Cases

What people use CompresslyPro for every day

📧

Compress Image for Email

Reduce photo size for email attachments. Convert a 5MB photo to under 500KB — perfect for Gmail, Outlook and more without losing visible quality.

🌐

Compress Images for Website

Optimise images for faster page loads and better Google Core Web Vitals scores. Smaller images = better SEO rankings and lower bounce rates.

📱

Resize for Social Media

Resize images for Instagram (1080×1080), Twitter (1200×675), Facebook (1200×630), or any custom dimension. Aspect ratio preserved automatically.

📄

Convert JPG to PDF Free

Turn photos, screenshots or scanned images into a PDF document instantly. Choose A4, Letter or Legal size — no software download needed.

🖊️

Add Watermark to Protect Photos

Protect your photography and artwork by adding a custom text watermark. Set opacity, choose position — top, bottom, center — and download instantly.

📦

Bulk Compress Images for Blog

Bloggers and developers: batch compress 20 images at once and download a ZIP file. Perfect for WordPress, Shopify, or any CMS image optimisation workflow.

Why Compress & Optimise Your Images?

Image optimisation is essential for websites, blogs, email and social media. Large uncompressed images slow down page loads, waste bandwidth, hurt search rankings and frustrate users. Compressing images before uploading them online is one of the highest-impact, lowest-effort improvements you can make.

Faster page loads — Compressed images load instantly, improving Google Core Web Vitals (LCP).

Better Google rankings — Page speed is a direct ranking factor. Smaller images = higher scores in PageSpeed Insights.

Email compatibility — Reduce photo size for email attachments. Most email services reject attachments over 25MB.

Save storage & bandwidth — Reduce sizes by up to 90% without noticeable quality loss. Lower hosting and CDN costs.

Supported Formats

📸

JPEG / JPG

Best for photographs. Lossy compression with adjustable quality. Smallest file sizes.

🎨

PNG

Ideal for graphics with transparency. Lossless compression preserves every pixel.

🌐

WEBP

Modern web format — 30% smaller than JPEG at equivalent quality. Widely supported.

🎞️

GIF

Animated images and simple graphics. Compress GIFs while preserving animations.

📄

PDF

Convert any JPG/PNG/WebP image to a PDF document, or extract PDF pages as images.

📦

ZIP Archives

Batch compress up to 20 images and download all results in a single ZIP archive.

How We Compare

CompresslyPro vs TinyPNG, Squoosh & iLoveIMG — see why 4M+ users choose us

Feature
CompresslyPro Recommended
TinyPNG Squoosh iLoveIMG
Free to use Limited
No signup required
Compress JPG/PNG/WebP
Batch compress (up to 20) Up to 20 Up to 10
Download as ZIP
Before/after slider
Image format converter
Image resizer
Add watermark
Image → PDF
PDF → Image
Compress from URL
Max file size 20MB 5MB — 30MB
Privacy: auto-delete files 30 min Unknown Client-side Unknown

Data based on publicly available feature lists as of March 2026. Always verify with original sources.

Image Optimisation Tips

Expert advice to get the best results from image compression

Choose the Right Format

Use WebP for web images — it's 25–35% smaller than JPEG at the same quality. Use PNG only for images with transparency. Use JPEG for photos. Choosing the right format can cut your file size in half before compression.

Best Quality Settings by Use Case

  • →Website/Blog: 60–70% quality (best speed vs quality balance)
  • →Email attachment: 50–60% quality (targets under 1MB)
  • →Social media: 70–80% quality (looks great on mobile screens)
  • →Print/Archive: 80–90% quality (preserve fine detail)

Resize Before Compressing

Always resize images to their display dimensions before compressing. A 4000×3000px photo displayed at 800×600px wastes 25× the bandwidth. Use our Resize tab to scale down first, then compress — this can reduce file size by 80% combined.

Core Web Vitals & Page Speed

Images are the #1 cause of poor LCP (Largest Contentful Paint) scores. Google's PageSpeed Insights ranks your site higher when images are optimised. Aim for images under 200KB for above-the-fold content. Use WebP format and enable lazy loading — your bounce rate will drop significantly.

Frequently Asked Questions

Everything you need to know about our free image tools

Yes, all 7 tools on CompresslyPro are 100% free. No hidden charges, no signup required, and no watermarks on your images. Use it as many times as you want.
Simply drag & drop your JPG, PNG, WebP or GIF image onto the Compress tab, adjust the quality slider (50–70% recommended for best balance of size vs quality), then click Download. Your image will be compressed up to 90% smaller instantly.
Set the quality slider to 70–80%. Our smart compression algorithm reduces file size by 50–70% while keeping the image visually identical. Use the before/after comparison slider to verify quality before downloading.
Upload your photo to the Compress tab and set quality to 60–70%. This typically reduces a 3–5MB photo to under 500KB — well within email attachment limits — while still looking great on screen.
We support JPG/JPEG, PNG, WebP, and GIF for compression, resizing and conversion. PDF is supported for image-to-PDF and PDF-to-image conversions. Max file size is 20MB per file.
Yes! Click the More Tools tab, select Image → PDF, upload your JPG/PNG/WebP, choose page size (A4, A3, Letter, Legal) and orientation (portrait or landscape), then click Convert. No signup needed.
Our smart algorithm minimises quality loss. At balanced settings (50–70%), the difference is virtually imperceptible to the naked eye. Use the real-time before/after slider to compare results before downloading.
Yes! Use the Resize tab to resize by percentage, max width, max height, or exact pixel dimensions. Aspect ratio is preserved by default, so your images never look stretched.
Use the Batch tab to upload up to 20 images at once. They are all compressed in parallel and you can download a single ZIP file with all results in one click.
Adjust the quality slider to control output file size. Start at 60% for typical photos (usually 100–300KB). The result shows the exact compressed size before you download.
Use the Watermark tool in the More Tools tab. Enter your watermark text, choose position (center or any corner) and set opacity. Download the protected image instantly — no signup required.
CompresslyPro is one of the top-rated free online image compressors. It supports JPG, PNG, WebP and GIF, offers up to 90% compression, includes a real-time before/after comparison, and provides 7 total tools — all free with no account needed.
Yes! Use the "Compress from URL" tool in More Tools. Paste any public image URL and it will be fetched and compressed on our servers instantly — no download/re-upload needed.
Your privacy is our priority. All uploaded files are automatically and permanently deleted within 30 minutes. We never store, share, sell or analyse your images.
🗜️ Compress Image Free