Smart Unit ConvertersSmart Unit Converters

Image Format Converter (PNG / JPEG / WebP)

Convert images between PNG, JPEG, and WebP in your browser. Adjustable quality. No upload — fully private.

Utility

Image Format Converter (PNG / JPEG / WebP)

Generated on April 25, 2026

Privacy: all conversion happens in your browser using HTML Canvas — your image is never uploaded to a server. WebP typically gives 25-35% smaller files than JPEG at the same visual quality and supports transparency. JPEG doesn't support transparency — alpha pixels are flattened against a white background.

?What is the Image Format Converter (PNG / JPEG / WebP)?

The Image Format Converter changes an image between PNG, JPEG, and WebP formats entirely in your browser using HTML Canvas — your file is never uploaded. PNG is lossless and supports transparency (best for screenshots, logos, anything with text). JPEG is lossy with adjustable quality (best for photos; no transparency). WebP is the modern choice — typically 25-35% smaller files than JPEG at the same visual quality, and supports transparency. The converter shows the original vs converted size delta so you can see how much you saved (or lost) with each format choice.

The Formula

WebP at quality 80 ≈ JPEG at quality 90 visually, but ~25-35% smaller. PNG = lossless (best for non-photos). JPEG = lossy + no alpha (best for photos).

Practical Examples

1

Convert a heavy PNG screenshot to WebP — typically 70-80% size reduction with no visible loss.

2

Convert a photo from PNG (10 MB) to JPEG quality 85 — usually 1-2 MB.

3

Convert legacy GIFs to WebP — much smaller, supports transparency.

4

Drop a HEIC photo from iPhone → save as JPEG for non-Apple devices (browser-dependent).

5

Strip transparency: convert PNG with alpha → JPEG (alpha is flattened against white).

Frequently Asked Questions

WebP if your audience is on modern browsers (95%+ in 2025) — best size/quality tradeoff. JPEG for maximum compatibility (every device since 1992 supports it). PNG for graphics with text, sharp edges, or transparency.

Popular Conversions

Jump to a ready-made conversion — useful for quick reference and sharing:

Explore More Tools

Base Converter

Convert between binary, decimal, hexadecimal, and octal number systems.

Unix Timestamp Converter

Convert between Unix epoch timestamps and human-readable dates.

Color Converter

Convert between HEX, RGB, and HSL color formats with live preview.