About PNG Files
PNG Image
PNG is a lossless image format that supports transparency. It is ideal for graphics, logos, screenshots, and any image where preserving exact pixel data is important.
Family
Raster & Vector Images
Extension
.png
MIME Type
image/png
Can Use As
89 50 4E 47 0D 0A 1A 0A 00 00 00 0D
ASCII: .PNG....IHDR
📈 Target Minimum File Size (Guaranteed ≥ KB)
Lossless JPEG Q100 + standard COM segment padding for government & exam portals
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HOW PNG CAME TO BE.
PNG was born out of a licensing dispute. In 1994 Unisys announced it would enforce a patent on the LZW compression inside GIF images, sending a shockwave through the early web. A group of developers, led by Thomas Boutell, convened on Usenet and in six months designed a royalty-free replacement: Portable Network Graphics.
PNG shipped as an RFC in 1996 and as an ISO standard in 2004. It kept the best of GIF (lossless compression, transparency, 8-bit indexed mode) while adding 24-bit and 48-bit true color, alpha transparency, gamma correction, and a far better compression engine (DEFLATE). The only thing it deliberately dropped was animation — a gap later filled by APNG.
Technical Specifications
- MIME type
- image/png
- Compression
- Lossless — DEFLATE (zlib)
- Color depth
- 1, 2, 4, 8 or 16 bits per channel
- Max dimensions
- 2^31 − 1 pixels per side (2.1 billion)
- Transparency
- Full 8-bit alpha channel
- Standard
- ISO/IEC 15948:2004
Typical Sizes & Weights
Icon or small logo
2–20 KB
UI screenshot (1920×1080)
200–800 KB
High-res photo (12 MP)
10–30 MB
Print-ready illustration
5–50 MB
STRENGTHS & LIMITATIONS.
Strengths
- Lossless compression — every save preserves the original pixels perfectly.
- Full 8-bit alpha channel for smooth transparency.
- Excellent for text, UI screenshots, logos, and line art.
- Royalty-free and an ISO standard (ISO/IEC 15948).
- Supports 16-bit color depth for high-fidelity work.
Limitations
- Much larger than JPEG for photographs (no perceptual compression).
- No native animation in most software (APNG support is inconsistent).
- No CMYK support — web and screen only, not print.
- Metadata capabilities are less rich than JPEG's EXIF.
CURIOSITIES & TRIVIA.
The first four bytes of every PNG file spell ".PNG" in ASCII — a built-in signature.
PNG's name is officially a recursive acronym: "PNG's Not GIF".
The format supports 16 bits per channel — good for HDR workflows — but almost no browser uses that depth.
Every PNG file ends with a CRC-checked "IEND" chunk; a truncated PNG is detectable immediately.
APNG (animated PNG) was invented at Mozilla in 2004 but ignored by the PNG standards body for over a decade.
Specialized Utilities for .PNG Files
Compress Image to 20KB
Compress signature scans, stamp images, and ID photos to strictly ≤ 20 KB (20,000 bytes) for strict online exam and government application portals using binary-search JPEG quantization.
Compress Image to 50KB
Compress JPG, PNG, or WebP photos to strictly under 50 KB (50,000 bytes) for passport portals, university admissions, civil service forms, and KYC uploads without changing pixel dimensions.
Compress JPG to 100 KB
Upload a JPG and download a decodable JPG at or below 100,000 bytes. If the limit cannot be reached, no output is offered.
Crop Image & Photo Resizer
Crop and resize JPG, PNG, WEBP, and AVIF images to exact pixel dimensions, social media aspect ratios, or custom print DPI online for free.
Resize Image
Resize images to exact dimensions or scale by percentage. Lock aspect ratio to prevent distortion. Supports all common image formats.
PNG Compressor — Reduce PNG Size Preserving Transparency
Compress PNG images up to 80% while preserving full alpha-channel transparency, or lock exact file size targets (20 KB, 50 KB, 100 KB).
WEBP Compressor — Optimize WebP for Core Web Vitals
Compress WEBP images for ultra-fast page loads and Lighthouse scores with fine-grained quality sliders and exact byte targets.
Favicon Generator — Multi-Resolution .ICO from PNG, SVG or WEBP
Generate a production-ready multi-resolution favicon.ico containing 16x16, 32x32, 48x48, 64x64, 128x128, and 256x256 alpha layers from any logo.
EXIF Metadata Remover
Strip hidden GPS coordinates, camera serial numbers, timestamps, and XMP/IPTC metadata from JPG, PNG, WebP, and TIFF photos before sharing online.
Image to Text (OCR)
Extract text from images using optical character recognition. Supports photos of documents, screenshots, receipts, and handwritten notes in 100+ languages.
JPG to Word Converter (OCR)
Convert scanned JPG, PNG, and WEBP images into editable Microsoft Word (DOCX) documents using 12-language optical character recognition (OCR).
CONVERT FROM PNG
CONVERT TO PNG
Common Use Cases
Logos, icons, screenshots, graphics with transparency, web design assets.
Related Formats
Popular comparisons
PNG vs JPG
Differences, file size, and when to choose each format.
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Differences, file size, and when to choose each format.
PNG vs DOCX
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PNG vs DDS
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PNG vs AI
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PNG vs AVIF
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Popular PNG conversions
The most-requested destinations when starting from PNG.
Frequently Asked Questions
PNG (Portable Network Graphics) is a lossless raster image format created in 1996 as a patent-free alternative to GIF. It supports transparency, making it ideal for logos, icons, and web graphics.
PNG files open natively in all modern operating systems, web browsers, and image editors including Photoshop, GIMP, Paint.NET, and Canva.
WebP offers 26% smaller file sizes than PNG with equivalent quality. Use WebP for web delivery when browser support is sufficient. Use PNG when maximum compatibility or professional editing workflows are needed.
Yes. Every .png file uploaded to KaijuConverter is transferred over TLS 1.3, processed in an isolated container with SHA-256 verification, and automatically deleted within 30–60 minutes (or immediately with 1 click).
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