Actualizado hace 2026

Compresor PNG

Compress PNG files online. Reduce PNG file size while keeping quality — choose a target size or quality level. Free, fast, no watermark.

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How to Compress PNG Files Online

PNG uses lossless compression by default, so standard tools barely reduce size. Our engine applies advanced color quantization to achieve much smaller files.

Upload PNG Images

Select your PNG screenshots, graphics, or logo files. Transparency (alpha channel) is fully preserved during compression. Upload up to 50 files at once.

Choose Compression Level

Select a target size. For PNGs, our tool reduces the color palette from millions to the optimal number of colors, then applies DEFLATE compression for maximum savings.

Download Optimized PNGs

Download your compressed PNGs with transparency intact. The output remains a valid PNG file — no format conversion needed. ZIP download available for batches.

Why Choose Our PNG Compressor

Lossless Compression

PNG uses the DEFLATE algorithm to compress pixel data losslessly. Row filtering before compression improves ratios for images with repeating patterns.

Color Quantization

Reducing a 24-bit truecolor PNG (16 million colors) to an 8-bit indexed palette (256 colors) can shrink file size by 60-80% with minimal visual change.

Alpha Transparency

Unlike JPG, PNG supports full 8-bit alpha transparency per pixel. Our compressor preserves every transparency level, so logos and overlays stay crisp.

Metadata Stripping

PNG files can contain large text chunks, color profiles, and timestamps. Stripping these ancillary chunks alone can shave 10-20% off file size with zero visual impact.

Ideal for Graphics

PNG excels at logos, icons, UI screenshots, diagrams, charts, infographics, text overlays, and any image requiring transparent backgrounds or pixel-perfect sharpness.

Sharp Edge Preservation

PNG compression preserves sharp edges and text without the blurring or blockiness artifacts found in lossy formats, making it the best choice for screenshots and diagrams.

La física de la compresión.

How PNG compression works at this target

PNG is lossless — the file format cannot discard image data. To hit small size targets, the compressor has to either (a) reduce the colour palette from 24-bit truecolor to indexed 8-bit (256 colours) or 4-bit (16 colours), which cuts size 40-70% but flattens gradients and can dither smooth areas, or (b) switch encoding to lossy JPG entirely (giving up PNG's transparency and lossless guarantees). For screenshots, diagrams, and logos with limited colours, palette reduction works cleanly. For photographic content saved as PNG, JPG conversion usually gives the best quality-per-kilobyte at this target.

Portales reales asignados a objetivos de tamaño

Which target size to pick for PNG

Different portals cap PNG uploads at different sizes. Pick the target that matches where you’re uploading rather than shrinking blindly — over-compressing wastes visible quality, under-compressing gets rejected.

50KB

SBI & bank signature upload

State Bank of India online account applications and most private bank KYC portals accept signature scans between 10 KB and 50 KB as PNG — the format keeps the signature's crisp black-on-white edges without JPEG artefacts.

100KB

Digital signature for KYC forms

Digital signature uploads for banking KYC, mutual-fund CAMS/KFin onboarding, and demat account opening all cap at 100 KB for PNG files.

150KB

Logo uploads for MSME & Startup India

MSME Udyam Registration and Startup India recognition forms accept logo PNGs up to 150 KB with transparent backgrounds preserved.

200KB

Aadhaar signature & Voter ID scans

The SSUP Aadhaar self-service portal accepts signature and thumb-impression PNGs up to 200 KB, and the Voter Service Portal uses the same cap for uploaded documents.