A practical compatibility matrix for JPG, PNG, WebP, HEIC/HEIF and AVIF — what each format does best, where it breaks, and which one to pick for email, social media or e-commerce uploads.

Image Quality vs File Size

How to pick image quality for the best trade-off between visual clarity and file size — what really changes between 70 and 95, when to switch to WebP/AVIF, and how to avoid re-save artifacts.

Why Output Size Can Increase

Why a converted image can end up larger than the original — how PicShift estimates already-deep compression, how the B/pixel signal is computed, and when re-compressing stops paying off.

All Tools

Resize Images

Resize photos for websites, forms, email, or social posts. Pick a preset (1920px, 1080px, 50%) or enter custom pixels — all processing stays on your device.

JPG / PNG / WebP

Compress Images

Shrink file sizes while keeping the picture usable for web or email. Move the quality slider and check the side-by-side preview before you download.

EXIF / GPS / IPTC

Inspect hidden metadata before sharing. PicShift re-encodes accepted images locally without intentionally copying the supported fields it detects, such as GPS, camera, timestamp, and software tags; source image content is not uploaded for this operation.

HEIC → JPG

HEIC to JPG

Convert your iPhone HEIC photos to JPG format instantly. Everything happens in your browser — your photos never leave your device.

HEIC → PNG

HEIC to PNG

Convert your iPhone HEIC photos to PNG in your browser. This dedicated PNG page starts at quality 100.

HEIC → WEBP

HEIC to WebP

Convert iPhone HEIC photos to WebP. WebP may reduce size for web use, but the result depends on the source, encoder settings, and target support.

HEIC → AVIF

HEIC to AVIF

Convert iPhone HEIC photos to AVIF for modern delivery pipelines that prioritize smaller transfer size.

HEIF → JPG

HEIF to JPG

Convert HEIF to JPG when you need a version that opens more reliably in older apps, upload forms, and everyday sharing tools. JPG is still the safest fallback when HEIF support is inconsistent.

HEIF → PNG

HEIF to PNG

Convert HEIF images to PNG for editing, design handoff, or archiving workflows. Keep quality at 95-100 when preserving the decoded pixels matters.

HEIF → WEBP

HEIF to WebP

Convert HEIF images to WebP for modern web delivery workflows that require smaller transfer sizes.

HEIF → AVIF

HEIF to AVIF

Convert HEIF images to AVIF when your target platform supports AVIF and maximum size reduction is a priority.

WEBP → JPG

WebP to JPG

Convert WebP images to broadly supported JPG for workflows that do not accept WebP. Source images are processed in the browser.

WEBP → PNG

WebP to PNG

Convert WebP images to PNG for transparency or editing. This dedicated PNG page starts at quality 100.

PNG → JPG

PNG to JPG

Convert PNG to JPG when a photo saved as PNG is too heavy for email, a contact form, or a website. JPG drops transparency; the size and visible change depend on the source and quality setting, so compare the output.

PNG → WEBP

PNG to WebP

Convert PNG to WebP when you want smaller transparent web images without giving up alpha support. This is one of the easiest ways to speed up image-heavy pages and UI assets.

JPG → PNG

JPG to PNG

Use this JPG-to-PNG converter for edits or annotations. It does not recover detail already lost in the JPG; this dedicated PNG page starts at quality 100.

JPG → WEBP

JPG to WebP

Convert JPG images to WebP and compare the actual visual quality and size. Savings depend on the source and encoder settings.

JPG → AVIF

JPG to AVIF

Convert JPG to AVIF when your target platform supports AVIF and you want a smaller modern image format. This is especially useful for performance-focused web delivery where every KB matters.

PNG → AVIF

PNG to AVIF

PNG is lossless and can be large for some content. AVIF supports transparency and may reduce the size of some images, but the result depends on the source and settings. Compare the rendered output and verify browser support before replacing a web asset.

WEBP → AVIF

WebP to AVIF

Convert WebP images to AVIF when your target platform supports AVIF and size reduction is a priority.

AVIF → JPG

AVIF to JPG

Convert AVIF images to the universally compatible JPG format. All processing happens locally.

AVIF → WEBP

AVIF to WebP

Convert AVIF images to WebP when your target platform requires wider compatibility while keeping modern compression.

AVIF → PNG

AVIF to PNG

Convert AVIF images to PNG for editing workflows. This dedicated PNG page starts at quality 100.

How PicShift Compares

	PicShift	Upload-based converters	Single-image tools	Desktop apps
No upload needed	✓	✗	✓	✓
HEIC / AVIF / WebP	✓	✗	✓	✓
Batch convert (up to 200)	✓	✓	✗	✓
Before / after comparison	✓	✗	✓	✗
Offline after workflow loads	✓	✗	✓	✓
No install needed	✓	✓	✓	✗
Free, no watermark	✓	✗	✓	✓
No source-image retention	✓	✗	✓	✓

Instant Conversion

Local Image Processing

Source images are processed in your browser and are not uploaded for conversion. Ordinary site traffic and analytics signals are described in the Privacy Policy.

Completely Free

No sign-up or watermarks. Limits: 50 MB per file, 200 files and 1 GB per batch.

Powered by Modern Browser Codecs

Professional-grade encoders compiled to WebAssembly for native speed in your browser

MozJPEG

Advanced JPEG encoder; file size and visual quality depend on the source image and selected quality.

OxiPNG

Lossless PNG optimizer written in Rust; the resulting size depends on the image.

imagequant

libimagequant palette quantization for high-quality lossy PNG compression.

libwebp SIMD

Google WebP encoder with automatic SIMD acceleration for faster encoding.

AVIF Encoder

AV1-based image encoding delivering next-generation compression efficiency.

Worker Pool

Multi-threaded parallel conversion that fully utilizes your multi-core CPU.

Convert Images Instantly Source Images Process Locally

Verify local processing yourself:

Docs

Why I Built PicShift

Privacy and Local Processing

Format Compatibility Guide