RashNarzędzia

    Kompresuj obraz

    Szybko zmniejszaj rozmiar plików graficznych bez utraty jakości. Kompresuj JPG dla sieci, PNG z przezroczystym tłem lub optymalizuj GIF online za darmo. Bez przesyłania, bez rejestracji.

    lub upuść obrazy tutaj

    Make image files smaller without ruining them

    Shrink JPG, PNG and WebP files until they load fast, while keeping edges, text and skin tones looking normal.

    Get under an upload limit on the first try

    Job portals, government forms and college applications usually cap uploads at 100 KB, 200 KB or 1 MB. Set a target size, check the preview, and download only when the result still looks right.

    Try this tool
    Get under an upload limit on the first try

    Faster pages start with lighter images

    A 4 MB hero photo is the most common reason a page feels slow on mobile data. Compressing before upload cuts load time far more than most theme tweaks do.

    Open Image Resizer
    Faster pages start with lighter images

    Compress a whole folder in one pass

    Drop in a batch of product shots or event photos, apply the same setting to all of them, and download the set — no per-file repetition.

    Open Image Converter
    Compress a whole folder in one pass

    Step-by-step guide

    How to use Image Compressor?

    Reduce the file size of JPG, PNG and WebP images without any visible quality loss.

    Step-by-step instructions

    1. 1

      Upload one image or a full batch by dragging them onto the drop zone.

    2. 2

      Pick a quality level — the live preview shows exactly how the output will look.

    3. 3

      Optionally convert the format (for example PNG → WebP for even smaller files).

    4. 4

      Click Compress and watch the before/after size for each image.

    5. 5

      Download individual files or grab everything as a single ZIP.

    Benefits

    • 50–80% smaller files, so websites load faster and emails send quicker.
    • Smart encoding preserves colours, edges and text sharpness.
    • Batch process dozens of photos in one go.
    • Free, unlimited and completely private.

    Who is it for?

    • Bloggers optimising images for page speed and SEO
    • Online sellers uploading product photos
    • Anyone freeing up phone or laptop storage

    FAQ

    Najczęstsze pytania

    Click the Upload Image button (or drag your files onto the drop zone) and pick one or more JPG, PNG, WebP or GIF files up to about 50 MB each. Use the Quality slider (0–100) to pick the trade-off — 75–85 is the sweet spot for JPEG — or switch to Target Size mode and type a KB/MB goal. Hit Compress and wait a moment for the progress bar; every image is processed locally in your browser, then Download saves it with -compressed appended to the filename, or Download All zips the batch.

    Supported inputs are JPG/JPEG, PNG, WebP, GIF, BMP and most modern HEIC files from iPhones; output stays in the same format by default but you can convert to WebP for the smallest size. Per-file limit is around 50 MB and batch mode accepts up to 20 images at once, with no daily quota. Files bigger than that or 20-megapixel+ PNGs may fail on low-RAM phones — resize to 2000 px on the long edge first and compression will finish in seconds.

    For photos saved as JPEG, quality 80 is nearly indistinguishable from the original at roughly 30–50% of the size, and 60–70 is fine for web thumbnails. PNG is lossless by default, so the compressor uses palette reduction and zlib optimization — expect 20–40% savings on screenshots and UI graphics without any visible change. WebP at quality 75 typically beats JPEG by another 25–30% at the same visual quality, which makes it the best pick for websites where modern browsers are the target.

    At quality 80+ on JPEG most people cannot tell the compressed version from the original on screen; artifacts start to appear below 60 as blocky patches in flat sky, skin tones or gradients. PNG stays pixel-perfect because the compression is lossless, so logos and line art keep crisp edges. If you need archival originals, keep the source file and use compressed copies for email, WhatsApp or web upload — the tool never overwrites your original.

    Everything runs 100% in your browser using the Canvas and WebAssembly encoders — files never leave your device, which is why the page keeps working even if you switch to airplane mode after loading it. There is no account, no signup and no watermark on the output. This makes it safe for sensitive material like ID photos, medical scans or client work covered by NDAs.

    Switch to Target Size mode, type the exact KB or MB you need (for example 100 KB for many government portals or 1 MB for LinkedIn banners) and hit Compress. The tool runs a binary search on the quality slider and, if needed, downscales dimensions to hit the target within about 5% accuracy. If the requested size is unrealistic for the resolution — like 20 KB from a 12-megapixel photo — resize to 800–1200 px on the long edge first and try again.

    Yes — drop up to 20 files onto the upload area and the tool processes them in parallel using a Web Worker pool, so a batch of 20 phone photos usually finishes in 10–20 seconds on a modern laptop. Each file shows its own progress bar and original vs new size; when the batch is done, click Download All to receive a single .zip. If your browser tab is throttled in the background, keep it visible for the fastest run.

    PNG uses lossless compression, so photographic PNGs (screenshots of photos, exported from Photoshop with 24-bit color) often only shrink 10–20%. To get bigger savings, convert to JPEG at quality 80 (great for photos) or WebP at 75 — both are offered from the format dropdown. Keep PNG only when you need transparency or crisp text/logo edges; otherwise WebP with alpha is a modern replacement that is 30–50% smaller.

    Yes, but with two caveats. iPhone HEIC files are converted to JPEG on the fly before compression, which adds a second or two per file; iOS Safari also caps memory around 300 MB, so very large 48-megapixel ProRAW files may fail — a single HEIC under 15 MB works fine. Android Chrome handles WebP output natively and is generally the fastest mobile browser for batch runs; Samsung Internet works too but is slightly slower on PNG palette reduction.

    "Unsupported format" usually means a RAW file (.CR2, .NEF, .ARW) — export to JPEG or TIFF from Lightroom/Photos first. "Out of memory" appears on phones with huge PNGs; resize on the same page to 2000 px and retry. If the Download button does nothing, your browser likely blocked the download prompt — check the address-bar shield icon and allow downloads for this site, or try Incognito mode which starts with default permissions.

    Photoshop's Save for Web gives you the finest per-image control (progressive JPEG, chroma subsampling, metadata stripping) and is unbeatable for one-off hero images, but it takes minutes per file. TinyPNG uses smart lossy PNG quantization and is excellent for UI PNGs; our tool matches its PNG savings and adds JPEG/WebP with target-size mode, all offline in your browser. For quick daily work — email attachments, WhatsApp uploads, blog images — this is faster and needs no account.

    Resize first, compress second — most photos on the web only need 1600–2000 px on the long edge, and dropping resolution saves more space than any quality tweak. Convert photos to WebP quality 75 for the web and to JPEG quality 82 for email; keep PNG only for screenshots and logos with sharp edges. Strip EXIF metadata (enabled by default in the Advanced panel) to shave another 5–20 KB per photo, and always compare the preview side-by-side before downloading.

    O tym narzędziu

    Kompresja Obrazów Online Za Darmo - JPG, PNG, GIF

    Szybko zmniejszaj rozmiar plików graficznych bez utraty jakości. Kompresuj JPG dla sieci, PNG z przezroczystym tłem lub optymalizuj GIF online za darmo. Bez przesyłania, bez rejestracji.

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