Our Newsletter Used to Take 3 Minutes to Load on Mobile
I manage email campaigns for a small company. Every month I'd drop a Canva-exported header image into the newsletter — and it was always a PNG, because Canva defaults to PNG for "best quality." What I didn't check was the file size: 2.8MB for a header image. On a slow mobile connection, that image alone was causing the whole email to feel broken and slow. After converting that header to JPG, it dropped to 160KB. The template loaded instantly. Same visual result — just a fraction of the data. That was the day I stopped treating PNG as the default for everything.
Upload PNGs
- Select up to 30 PNGs.
- Click Convert.
- Download your optimized JPGs
The workflow I follow now: PNG to edit, JPG to deliver
This took me too long to internalize. PNG is for working — it's lossless, edits cleanly, and never degrades through re-saves. JPG is for sending — it's smaller, loads faster, and works in every email client, upload form, and platform that exists. The conversion from PNG to JPG is the handoff from "asset I'm working on" to "asset I'm delivering."
Where this conversion actually saves you
- Email campaigns: This is where I use it most. Design tools export PNG by default. Email clients load images over mobile connections. A 3MB PNG header is user-hostile; a 150KB JPG is not.
- Blog and CMS images: Figma and Canva both default to PNG exports. Before uploading to WordPress, Webflow, or any CMS, convert photo-type images to JPG. The page load difference is real.
- Social media posts: Most platforms recompress your images anyway. Uploading a JPG instead of PNG gives the platform's compressor better source material and avoids double-compression artifacts.
- Sharing photos by email or chat: A PNG photo attachment can be 5–15× larger than the equivalent JPG. Your recipients notice, even if they don't say anything.
When to keep the PNG and not convert
Not everything should become a JPG. I keep PNG for:
- Logos and graphics with transparency: JPG can't store transparent backgrounds. Any transparent area becomes white. For layered design work, PNG is non-negotiable.
- Screenshots going into documentation: JPG compression blurs text in screenshots. PNG keeps every pixel sharp. All my technical documentation screenshots stay PNG.
- Working files I'll edit again: Re-saving a JPG adds compression artifacts. If the file is going to pass through more edits, keep it PNG until the final delivery.
- Flat-color icons and diagrams: JPG compression creates artifacts on sharp edges and solid color regions. PNG often compresses these more efficiently anyway.
No account, no retention, no nonsense
Your PNGs are uploaded over HTTPS, processed in temporary storage, and deleted when the conversion finishes. I don't keep files, build profiles, or share data with anyone. The conversion runs and then it's gone.
Frequently Asked Questions
How much smaller will my JPG be compared to the PNG?
For photographs: typically 70–90% smaller. For flat graphics and logos: much less savings, sometimes none. JPG excels on photographic content; PNG can actually be smaller for simple flat-color images.
My PNG has a transparent background. What happens to it?
Transparent pixels get composited against a white background before JPG encoding. JPG has no alpha channel — it can't store transparency. If you need to keep transparency, use PNG or WebP.
Will I notice a quality loss?
At high quality settings (85–95%), most people can't distinguish a JPG from its PNG source on screen. The difference only becomes visible under extreme zoom or on very fine text details.
Can I convert multiple PNGs at once?
Yes. Select up to 30 files and download the results as a ZIP.
Are my files kept after the conversion?
No. Files are deleted automatically as soon as the conversion job completes.
Other tools in the pipeline
Resize image · Remove image background · Convert HEIC to JPG
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