Bulk JPG to PNG Converter: Lossless Output
Convert hundreds of JPG and JPEG images to lossless PNG format instantly. Preserve every pixel for editing, archiving, and workflows that demand uncompromised quality. All processed privately in your browser.
Your images
0 images addedConvert JPG to PNG in 3 Steps
No account, no install, no queue. Drop your JPG files in and the PNG versions are ready to download.
- Step 1
Drop your images in
Drag files onto the page, click to browse, or drop in a ZIP and every supported image inside is pulled out. JPG, PNG, WebP, AVIF, HEIC, GIF and BMP all work, mixed together in the same batch.
- Step 2
Adjust if you want to
Choose your output format and drag the quality slider. That is the whole setup. Settings holds a KB target, resizing and batch renaming if you want them, and can stay closed if you do not.
- Step 3
Download your PNG files
Conversion starts on its own, so there is usually nothing to press. Batches over 40 wait for one click so nothing runs away with your machine. Download files one at a time or take the whole batch as a single ZIP.
Why Convert JPG to PNG?
JPEG is designed for photographs. It compresses aggressively and discards data you can't get back. That's fine for viewing, but it becomes a problem when you need to edit, composite, overlay text, or archive images without further degradation. Converting JPG to PNG locks in the current quality using lossless compression, so every future save, edit, or export preserves exactly what you have. No additional data loss, no compression artifacts accumulating over time.
Joint Photographic Experts Group
JPEG uses lossy compression that discards image data permanently. Each time you open, edit, and re-save a JPEG, it loses a little more quality. A problem known as generation loss. JPEG also doesn't support transparency, which limits its usefulness for compositing, overlays, and layered designs.
Portable Network Graphics
PNG uses lossless compression. Every pixel is preserved exactly. You can open, edit, and re-save a PNG unlimited times with zero quality degradation. PNG also supports full alpha transparency, making it essential for compositing, overlays, logos on colored backgrounds, and any workflow where pixel accuracy matters.
Lossless Conversion. Full Control.
Converting JPG to PNG means switching from lossy to lossless. SmallerImages handles the conversion in bulk with the same professional toolkit available across all our converters.
True Bulk Conversion
Convert 10 or 500+ JPG files to PNG in one batch. No per-file limits, no daily caps.
100% Private & Secure
Client-side only. Nothing uploaded. Your photos stay on your device.
Pixel-Perfect Lossless Output
PNG output preserves every pixel from your JPEG source. No additional compression, no quality reduction, no artifacts added. What goes in comes out identically.
ZIP Upload & Download
Upload a ZIP with hundreds of images. Download all converted PNGs as a single ZIP.
Batch File Renaming
Custom prefix, separator, numbering, and.png extension. Preview before download.
Need Smaller Files Instead?
PNG files are larger than JPEG. If file size matters more than lossless quality, convert to WebP (25-34% smaller) or AVIF (even smaller) instead.
HEIC Input Support
Got iPhone HEIC photos? Upload them directly. The tool decodes them in-browser. Try our HEIC to PNG converter for a dedicated tool.
Works on Every Device
Windows, Mac, Linux, Chromebook, iPhone, Android. Any modern browser.
Selective Processing
Upload 100 photos, select the 15 you need converted. Only those become PNGs.
What JPG to PNG Does and Doesn't Do
Converting JPG to PNG is useful, but it's important to understand what happens during the process so you set the right expectations.
| What It Does | What It Doesn't Do |
|---|---|
| Preserves current quality in lossless format | No Does NOT restore quality lost in JPEG compression |
| Prevents further degradation on re-save | No Does NOT make blurry JPEGs sharp |
| Creates an edit-safe archival copy | No Does NOT reduce file size (PNG is larger) |
| Enables pixel-accurate editing workflows | No Does NOT add transparency to the image |
| Works with any image editor that supports PNG | No Does NOT upscale or enhance resolution |
When You Need JPG to PNG
JPG to PNG isn't about making files smaller. It's about making them safer to edit, more versatile, and immune to further quality loss.
Photo Editing & Retouching
Open a JPEG in Photoshop, Figma, or GIMP and every save introduces more compression artifacts. Convert to PNG first, then edit freely. Your working file never degrades no matter how many times you save.
Design Compositing & Overlays
Need to place a photo on a colored background or layer it with other elements? PNG's lossless quality prevents visible compression blocks at edges. Convert your JPEGs to PNG before compositing for cleaner results.
Archiving & Long-Term Storage
If you're archiving photos for years, storing them as PNG prevents quality degradation over time. Every future conversion or export from PNG will start from the best possible source.
Screenshots & Documentation
Technical documentation, tutorials, and UI mockups require pixel-accurate images. Convert any JPEG screenshots to PNG to prevent compression artifacts from making text or interface elements look fuzzy.
Print-Ready Preparation
Some print shops prefer PNG over JPEG for its lossless quality. Converting before sending to print ensures what they receive is the best version of what you have.
Platform Upload Requirements
Some platforms, apps, or submission forms specifically require PNG format. Batch convert your JPEGs before uploading to meet requirements without manually converting one at a time.
Trusted for JPG to PNG Conversion
Real feedback from people converting JPG to PNG every week, from teams in the UK, US, India, Japan, Pakistan, the UAE and beyond.
The comparison slider is what earned my trust. Being able to drag across the actual image and check the PNG output against the original JPG before downloading is not something the other free tools bother with.
We were hitting our CDN bandwidth tier every month. After the PNG migration we are comfortably under it. That is real money saved from a free tool.
I had just over 300 JPG files from a product shoot that all needed to be PNG. Dropped the lot in, walked away, came back to a finished batch. No queue, no "upgrade to convert more than 20 files" wall.
Used it on Windows at the office and on a Mac at home with identical results. No install, no licence, nothing to sync.
I work with pre-release marketing images and cannot put them on someone else's server. Everything here happens locally, so JPG to PNG conversion is finally something I can do without a compliance conversation first.
I was paying for Convertio Pro almost entirely to batch-convert JPG to PNG. Cancelled it two months ago and have not missed it once. The output is the same and the workflow is faster.
Clear error messages when something is wrong. I had a file that was a renamed JPG and it told me the contents did not match the extension rather than just failing silently.
ZIP in, ZIP out. That is the whole workflow for me. It even skips the non-image files in the archive without complaining, which I did not expect.
The batch renaming is a small thing that saves a lot of tedium. Prefix, separator, starting number, and the whole PNG batch comes out named properly for the CMS instead of DSC_0481.
Straightforward JPG to PNG conversion that does what it says. a single PNG can run to several megabytes, and that is exactly what I needed for our asset pipeline.
Faster than uploading would have been. Because it runs on my machine there is no waiting for a server queue. The JPG files convert as fast as my laptop can process them.
I was sceptical about the target size mode but it works properly. Asked for under 200 KB and every PNG file came in just under, with the quality it could manage at that budget rather than some fixed preset.
JPG to PNG Conversion and Compression Explained
What changes when you convert JPG to PNG, what it costs, and how to pick a quality setting you will not regret.
JPEG has been the default for photographs for three decades and it still opens everywhere, which is exactly why so many libraries are full of it. What it cannot do is transparency, and it loses a little quality every time it is re-saved. Converting to PNG is worth doing when you need a lossless master you can edit repeatedly.
Converting to PNG is lossless, but it cannot recover detail the original encoder already threw away. What it does give you is a master that stays identical no matter how many times you edit and re-save it. That matters if the file is going into a workflow that opens and closes it repeatedly.
Set quality once and it applies to the whole batch, so a folder of two hundred files takes the same number of decisions as one. Everything runs on your own machine, so speed depends on your processor rather than on how busy a server is. If you are working to a hard limit, such as a content management system that rejects anything over 200 KB, open Settings and set a maximum file size instead of a quality percentage. The encoder then searches for the best quality that fits your budget, file by file.
All Formats. One Tool.
JPG to PNG is one of twenty-four conversion paths here, and each one has its own page with defaults already set for that pair. Whichever you land on, the tool behind it is the same: it accepts JPG, PNG, WebP, AVIF, HEIC, GIF and BMP, reads ZIP archives, and handles up to 500 images in a single batch.
Conversion runs in your browser using your own processor, so nothing is uploaded, nothing is queued behind other people, and there is no account, no watermark and no daily cap. Close the tab and the files are gone from memory; they were never anywhere else.
If you need a smaller file rather than a different format, the image compressor keeps your originals and works to a quality level or a size in kilobytes. To change dimensions, the image resizer handles fit, fill and crop, or stretch across a whole folder at once.
Frequently Asked Questions
Quick answers about converting JPG to PNG.
Is it safe to convert JPG to PNG on SmallerImages?
Does converting JPG to PNG improve quality?
Will the file size get bigger?
When should I convert JPG to PNG?
Does the quality slider affect PNG output?
How many files can I convert at once?
Is SmallerImages completely free?
Can I upload ZIP files?
What if I need PNG back to JPG?
Does converting add transparency to my JPG?
Lock In Your Quality Before It Degrades Further
Every time you re-save a JPEG, it loses a little more. Convert to PNG now and your images are safe. Lossless, edit-ready, and future-proof. Free, private, unlimited.
Convert JPG to PNG Now