Guide5 min read
Why Converting PNG to JPG Makes It Bigger
Why converting PNG to JPG sometimes increases file size instead of shrinking it, and how to pick the right format or tool for the image you actually have.
Compress Image
Reduce image file size by up to 90% — free, instant, and private. Nothing is uploaded.
Drop images here, click to browse, or paste
Supports JPG, PNG, WebP, HEIC, and GIF — up to 50 MB each
✓Free forever
✓No account required
✓No watermark
✓Nothing uploaded to servers
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How much smaller, really?
Real files, compressed with the default settings on this page — not estimates.
Marketing photo (larger)
829 KB → 129.4 KB
84% smaller
in 0.4s, PNG source
Marketing photo (smaller)
654.8 KB → 200.2 KB
69% smaller
in 0.3s, PNG source
Measured August 12, 2026 with quality 80% (default), output format JPEG (default). Numbers come from the actual downloaded file size, not an estimate — regenerated by running PixelTools' own compressor end to end against real, unedited source images.
Everything you need to compress images fast
Batch compression
Drop 10, 20, or 50 images at once. Every file is compressed in sequence with the same quality settings and ready to download. No per-image limits, ever.
Quality slider with real-time feedback
Dial in exactly the right balance between file size and visual quality. See the compressed size update as you adjust, so you know what you are getting before you download.
Format conversion built in
Convert PNG to JPG, JPG to WebP, or any combination — all while compressing. One tool handles both compression and conversion in a single step.
Before and after comparison
See the original and compressed file sizes side by side for every image. A clear percentage badge shows exactly how much space you saved.
Private by design
Your images never leave your device. PixelTools runs entirely in your browser using the Canvas API — zero server uploads, zero data stored. Works offline once loaded.
Three steps to smaller images
- 1
Upload your images
Drag and drop one or more images onto the page, click to browse, or paste from your clipboard. Supports JPG, PNG, and WebP files up to 50 MB each.
- 2
Adjust quality
Use the quality slider to set your target compression level. The default 80% typically reduces file size by 60-80% with no visible quality difference. Go lower for smaller files, higher for maximum fidelity.
- 3
Download compressed images
Your images are compressed instantly in your browser. Download them individually or all at once. Nothing is uploaded to any server — your files stay on your device.
Built for anyone who works with images
Whether you are a web developer optimizing page speed, a social media manager preparing a batch of posts, or a student shrinking files for an upload limit — PixelTools compresses your images in seconds.
Web developers
Optimize images for faster page loads. Compress product photos, hero images, and thumbnails before deployment. Smaller images mean faster Core Web Vitals and better SEO.
Email campaigns
Keep images under email size limits without sacrificing quality. Compress newsletter graphics and product shots so they load instantly on any device.
Social media managers
Batch compress images before scheduling posts. Faster uploads, less storage used, and your followers see the same visual quality.
Bloggers and content creators
Reduce image sizes for blog posts and articles. Compressed images load faster, which means lower bounce rates and better reader experience.
Ecommerce stores
Compress product photography in bulk. Lighter images mean faster shop pages, which directly impacts conversion rates and search rankings.
Students and professionals
Shrink images for presentations, reports, and documents. Keep your files under upload limits for email, Google Drive, or LMS platforms.
Frequently asked questions
Is PixelTools image compressor free?
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Yes, completely free with no limits. Compress as many images as you want, as often as you want. No subscription, no trial, no account required.
Does compressing an image reduce its quality?
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At the default 80% quality setting, the difference is imperceptible to the human eye while reducing file size by 60-80%. You can adjust the quality slider to find the right balance between size and fidelity for your needs.
Are my images uploaded to a server?
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No. PixelTools compresses images entirely in your browser using the Canvas API. Your files never leave your device — there is no server upload, no cloud processing, and no data stored anywhere.
What image formats can I compress?
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PixelTools supports JPG, PNG, and WebP for compression. Need to convert from HEIC, SVG, BMP, TIFF, or AVIF? Use our Image Converter — same engine, more formats.
Can I compress multiple images at once?
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Yes. Drop or select as many images as you need — they are all compressed in batch. You can download each file individually or all at once.
How is this different from TinyPNG?
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TinyPNG uploads your images to their server for processing and limits free usage to 20 images per day. PixelTools compresses everything locally in your browser with no upload and no usage limits. Your images stay private.
What is the maximum file size I can compress?
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PixelTools can handle images up to 50 MB each. Very large images may take a few seconds to process depending on your device, but there is no hard limit on resolution.
Does compression change image dimensions?
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No. By default, PixelTools preserves the original width and height of your image. Only the file size is reduced. Dimensions stay exactly the same.
From the blog
Image Formats5 min read
AVIF vs WebP vs JPG: Best Format for 2026?
AVIF, WebP, and JPG all compress differently and suit different use cases. Here's a direct comparison to help you pick the right format for your images.
Compression5 min read
How to Compress a PNG Without Losing Transparency
PNG compression explained: how to reduce PNG file size without destroying transparency or introducing visible quality loss. Practical methods, tools, and when to use lossless vs lossy PNG compression.
Image Formats3 min read
JPEG to JPG: Do You Even Need to Convert?
Searching for how to convert JPEG to JPG? Here's the truth: they're the same format. Here's what you actually need to know — and when renaming is enough.
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