How much can PixLite reduce my image file size?

Results vary depending on the original image and format, but converting a typical JPEG or PNG to WebP at 80% quality reduces file size by 60–80%. A 5 MB phone photo often compresses to under 500 KB. PNG files with large flat-color areas compress less than photographs.

Free Image Compressor – Compress JPG, PNG & WebP Online

Drop images here or click to select Maximum 20 files at a time

Quality: 80%

Format

How to Use PixLite

PixLite compresses and converts images directly in your browser — no account, no uploads, no waiting. Here's how to go from raw image files to optimised output in under a minute.

Select your images — Drag and drop image files onto the upload zone, or click it to open your file picker. You can add up to 20 files at once. JPG, PNG, and WebP are all accepted as input.
Choose an output format — Use the Format dropdown to select WebP, JPEG, or PNG. WebP is the default and recommended choice for web use: it produces the smallest file sizes without visible quality loss and is supported by every modern browser.
Set your quality level — Drag the Quality slider to balance file size against visual fidelity. A setting of 75–85% is the sweet spot for most web images — files shrink by 60–80% with no perceptible difference at normal screen sizes.
Download your results — Compression starts the moment files are loaded. Once processing finishes, download individual images using the per-file button, or grab everything at once with Download all as ZIP.
Reset and run another batch — Click Reset all to clear results and start fresh. PixLite removes previous files from browser memory immediately.

What PixLite Does

PixLite is a client-side image compression and format conversion tool. Every step happens inside your browser tab — no file is ever sent to an external server, and nothing is stored after you close the tab.

Lossy compression (WebP & JPEG) — Reduces file size by selectively discarding image data the human eye is unlikely to detect, controlled by the Quality slider. Typical reduction: 60–80% compared to the original.
Lossless compression (PNG) — Reorganises image data to produce a smaller file with zero quality loss. Best for logos, icons, screenshots, and any image where precise edges and flat colours matter.
Format conversion — Converts any supported input to WebP, JPEG, or PNG in a single step. You can mix input formats freely: upload a combination of JPGs and PNGs and convert everything to WebP simultaneously.
Batch processing — Handles up to 20 files per session, processing them in parallel using your device's own CPU.
ZIP download — Bundles all compressed outputs into a single ZIP file for one-click download.

Common Use Cases

Preparing images for a website or CMS — A photo straight from a phone or camera is often 5–10 MB. Running it through PixLite at 80% WebP quality brings it under 400 KB — a reduction that directly improves page load speed and Core Web Vitals scores. WordPress, Squarespace, and Webflow store whatever file size you upload, so compressing first benefits every future visitor.
Reducing email and messaging attachments — Most email providers cap attachments at 25 MB. A batch of 20 event photos at 4 MB each blows past that limit. Compressing to WebP first can bring the same 20 photos under 5 MB total, with no visible quality difference.
Optimising ecommerce product images — Product galleries are consistently the heaviest part of an online store. Keeping product images under 150–200 KB each using WebP at 80% quality measurably improves page speed and reduces cart abandonment caused by slow-loading image carousels.
Archiving large photo collections — Converting a folder of high-resolution JPEGs to WebP at 85% quality typically halves storage requirements with no meaningful quality loss when reviewing photos at normal sizes. A 50 GB photo archive often compresses to under 20 GB.

How PixLite Works

Drag your images into the upload zone, or click to select files from your device. Set your preferred output format and quality level, then download the results individually or as a ZIP. No account, no sign-up, and no file ever leaves your machine.

PixLite runs entirely inside your web browser. When you open the tool, your browser downloads the processing code. Everything after that happens locally: your files are read into browser memory, compressed using your device's own CPU, and written back to your device. Nothing is transmitted over the internet at any point.

Why Image Compression Matters

A high-resolution photo from a modern phone or camera is often 4–10 MB. The same image, converted to WebP at 80% quality, is typically under 400 KB — with no visible difference at normal screen sizes. That gap directly affects page load speed, mobile data usage, and how Google scores your site.

Faster page loads — Images account for the majority of page weight on most websites. Smaller images load faster, which improves user experience and Google search rankings.
Better Core Web Vitals — Image size is a primary driver of LCP (Largest Contentful Paint), one of the metrics Google uses to evaluate page quality.
Lower storage and bandwidth costs — Compressed images take up less space on your server, CDN, or cloud storage, and cost less to serve to visitors.
Improved mobile experience — Smaller files mean less data usage for visitors on mobile connections, where every kilobyte counts.

When Should You Compress Images?

Not every image needs the same treatment. Here are the most common situations where running your images through PixLite makes a clear difference:

Before uploading to a website or CMS — WordPress, Squarespace, Webflow, and similar platforms store whatever file size you upload. Images that go straight from your camera to your site can be 10–20× larger than they need to be. Compressing first means faster load times for every visitor, forever.
Before sharing in email or messaging apps — Many email providers and messaging apps impose attachment size limits. Compressing a batch of event photos before sending can bring a 50 MB attachment down to under 5 MB without any visible quality loss.
Before uploading product photos to an ecommerce store — Product image galleries are often the slowest part of an online store. Keeping product images under 200 KB each without sacrificing detail is a meaningful improvement for conversion rate and SEO.
For social media posts — Platforms like Twitter, LinkedIn, and Facebook re-compress your images on their end, but uploading already-optimized files can result in better final quality because the platform's compression algorithm is applied to a cleaner source.
For archiving large photo collections — Converting a folder of RAW or high-resolution JPEGs to WebP at 85% quality can reduce archive storage by 60–70% with minimal perceptible quality loss at normal viewing sizes.

Tips for Getting the Best Results

Start at 80% quality — For most photographs destined for web use, 80% is the recommended starting point. It delivers file sizes roughly 60–75% smaller than the original with a quality difference that is invisible at typical screen sizes. Adjust up if you need extra fidelity, down if file size is the priority.
Choose WebP unless you have a reason not to — WebP is supported by all major browsers (Chrome, Firefox, Safari, Edge) and consistently produces smaller files than JPEG at equivalent quality. The only reason to choose JPEG is if you're uploading to a platform that doesn't accept WebP, such as certain older email clients or social platforms.
Use PNG for logos and graphics — Photographs compress well with lossy formats like WebP and JPEG. Logos, icons, and graphics with solid areas of color and sharp edges should use PNG to avoid compression artifacts around lines and text.
Preserve transparency with WebP or PNG — If your image has a transparent background (common in product cutouts and UI assets), always choose WebP or PNG. Selecting JPEG will fill transparent areas with white.
Batch similar images together — If you're processing a mix of photos and graphics, consider running two separate batches: one at 80% WebP for the photos, and one at 100% PNG for the logos and icons. This avoids applying lossy compression to assets where lossless quality matters.

Frequently Asked Questions

Are my images uploaded to a server?

No. PixLite processes everything inside your browser using client-side JavaScript. Your images are never transmitted to any server and are never accessible to anyone other than you. This is not just a policy — there is no server infrastructure to receive your files in the first place.

What image formats does PixLite support?

PixLite compresses and converts images to WebP, JPEG, and PNG. You can mix input formats freely — upload a combination of JPGs and PNGs and convert them all to WebP in one batch.

Will compression reduce my image quality?

At 70–85% quality, the difference between a compressed and original JPEG or WebP is typically invisible at normal viewing sizes. PNG uses lossless compression, so quality is fully preserved at any quality setting.

How many files can I process at once?

Up to 20 files per session. There is no server-side file size cap — processing speed depends on your device. Most modern computers handle images up to 20–30 MB each without issue.

Which format should I choose?

WebP for almost everything web-related — it produces the smallest files at equivalent visual quality and is supported by all modern browsers. JPEG for photos going to platforms that don't accept WebP. PNG when you need a transparent background or truly lossless output.

Is PixLite free?

Yes. Completely free, no sign-up required, no watermark added to your images.

What quality setting should I use?

For web images, 75–85% is the standard sweet spot. At this level, file sizes drop by 60–80% and the visual difference is imperceptible at normal display sizes. Use 90%+ only when near-lossless fidelity is required, such as product photography where fine detail must be preserved.

Can I compress images without losing transparency?

Yes. Both WebP and PNG support transparency. If your image has a transparent background, choose WebP or PNG as the output format. JPEG does not support transparency — transparent areas will be filled with white.

How much can PixLite reduce my file size?

Results vary, but converting a typical JPEG or PNG photo to WebP at 80% quality usually reduces file size by 60–80%. A 5 MB phone photo often compresses to under 500 KB. Images with large areas of solid color (logos, illustrations) compress less than photographs.

WebP vs JPEG vs PNG — A Quick Comparison

Format	Best For	Transparency	Typical Size
WebP	Web images, photos, graphics	Yes	Smallest
JPEG	Photos, no transparency needed	No	Medium
PNG	Logos, icons, transparent images	Yes	Largest

WebP is the recommended default for web use. It is supported by all major browsers and consistently outperforms JPEG in both file size and quality at equivalent compression settings.

Understanding Image Compression: Lossy vs Lossless

There are two fundamentally different types of image compression, and understanding the difference helps you choose the right settings in PixLite.

Lossy compression works by permanently discarding some image data — typically fine details and subtle color variations that are difficult for the human eye to detect. JPEG and WebP use lossy compression by default. The quality slider in PixLite controls how aggressively this data is discarded: lower values mean smaller files but more visible quality loss; higher values preserve more detail at the cost of a larger file size.

Lossless compression reorganizes image data more efficiently without throwing any of it away. PNG uses lossless compression, which means the file can be decompressed back to an exact copy of the original. This is ideal for screenshots, logos, text-heavy graphics, and any image where precise colors and sharp edges are important. The trade-off is that lossless files are larger than lossy equivalents.

WebP supports both modes — lossy (smaller, with minor quality loss) and lossless (larger, perfect quality). PixLite uses WebP's lossy mode by default, which is appropriate for nearly all photographic content.