Image to AVIF Converter (PNG/JPG/WebP to AVIF)

Last updated: February 2026 ✅

Key Takeaways

AVIF can be much smaller. AVIF is designed to deliver strong compression while keeping good visual quality for modern websites.

This tool stays local. Your image is decoded and exported in the browser—no server upload required.

Start with quality 80–85. For most photos and banners, that range is a solid balance between size and detail.

Resize before publishing. A correctly sized image saves more bytes than any codec. Avoid uploading oversized images.

Use AVIF + fallback. Real-world publishing usually means AVIF for modern browsers plus WebP/JPG/PNG as a backup.

Export support can vary. Some browsers can view AVIF but may not support exporting it via Canvas. This tool detects that.

If AVIF conversion is unavailable: Some browsers can display AVIF but can’t export it. In that case, use WebP as a fallback (still modern and efficient), or try another up-to-date browser for AVIF export.

Image to AVIF Converter Browser-safe, no uploads

Convert PNG, JPG, or WebP into AVIF. If AVIF export isn’t available, the tool exports your chosen fallback. Bulk mode supports up to 10 files.

Input

Drag & drop images here (PNG, JPG, WebP).
Nothing is uploaded.

Status: Choose an image to begin.

Options Checking export…

Mode

Bulk mode (up to 10 files)

Single mode shows a preview. Bulk mode converts a list one-by-one.

Quality (lossy)

Current: 82 (start with 80–85)

Fallback output (if AVIF export is unavailable)

If AVIF export works, output is AVIF regardless of this setting.

AVIF encoding effort

Browsers may ignore this setting (it’s a “hint”).

Resize width (px)

Leave blank to keep original size.

Resize height (px)

Use one dimension + keep aspect ratio.

Keep aspect ratio

Helps avoid stretched images.

Bulk tips

Download All triggers multiple downloads (some browsers may ask permission).

Output is AVIF when supported. If not, the tool exports your selected fallback format (WebP/PNG/JPG).

Preview (single mode) Input vs Output

Input —

Output —

Results (For Bulk Mode Only) 0 files

No files yet

Enable Bulk mode to convert up to 10 images at once.

Idle

⚙️ How To Use This Tool (step-by-step)

Click Choose Image (or drag & drop your file).
Set Quality (start at 82).
Optional: select Encoding effort:
- Balanced (recommended)
- Faster export
- Smaller file (slower)
Optional: add Resize width/height.
- Keep Keep aspect ratio enabled if you only fill one dimension.
Click Convert to AVIF.
Click Download (or Copy if available).

🧠 Mini Tutorial: Publishing AVIF on WordPress the “safe way”

A practical real-world approach:

Convert your main image to AVIF
Also keep a fallback:
- WebP (recommended fallback for modern audiences)
- JPG (maximum compatibility for photos)
- PNG (if transparency is required)

If you use WordPress plugins that generate responsive images, you can store AVIF and allow the site to serve compatible formats automatically. If you are doing it manually, keep both files and use a method that supports fallbacks.

“This tool converts PNG, JPG, or WebP images into AVIF directly in your browser. Below you’ll learn what AVIF is, why it’s used for performance, how AVIF encoding works, and the best workflow to publish AVIF safely with fallbacks.”

🚀 Intro: what this tool solves

AVIF is a modern image format built to reduce file sizes while keeping strong visual quality. If you publish images on a blog, portfolio, or documentation site, image weight often becomes the biggest performance bottleneck—especially for feature images, screenshots, and hero banners.

This Image to AVIF Converter helps you take common formats (PNG, JPG, WebP) and export an AVIF file without uploading anything. It’s designed for beginners who want a simple workflow: load an image, adjust quality and size, convert, then download the result.

Who it’s for

Bloggers and WordPress site owners who want faster pages and better Core Web Vitals
Beginners learning modern web performance
Developers who want a quick “local conversion” tool
Anyone preparing multiple formats (AVIF + fallback) for real-world compatibility

📌 What Is AVIF?

AVIF stands for AV1 Image File Format. It’s an image format designed to deliver strong compression and modern features like transparency and wide color support. The format is maintained by the Alliance for Open Media.

For web publishing, the simplest way to think about AVIF is:

JPG: widely compatible, good for photos, larger files
PNG: lossless + transparency, usually heavy
WebP: modern and practical for most sites
AVIF: modern and often smaller than WebP for similar quality (especially for photos)

📜 Short History of AVIF

Creator / steward: Alliance for Open Media
Spec v1.0.0 finalized: February 2019
Why it was created: to provide a royalty-free, modern format with better compression and advanced image features for the web.
Ongoing evolution: the specification continues to update (newer spec versions exist).

⚙️ How AVIF Works (conceptual)

When you “convert to AVIF,” the workflow is basically:

Decode the input (PNG/JPG/WebP) into raw pixels
Resize (optional) to match your intended display size
Encode to AVIF using an AVIF encoder (in this tool, your browser’s exporter when available)
Download the new AVIF file

AVIF encoding is more computationally expensive than JPG. That’s why AVIF can sometimes be slower to export, especially on older devices.

💡 Why Use AVIF?

1) Faster pages

Smaller images usually mean:

faster page loads
improved user retention
better performance metrics

2) Higher quality per byte

AVIF aims to preserve detail while reducing artifacts, which is especially noticeable on:

gradients
photos
“hero” images

3) Modern features

AVIF supports modern image capabilities (depending on how the image is encoded), and it’s widely discussed as a future-facing web format.

Illustration comparing a larger image file versus a smaller image file — AVIF often reduces file size while keeping strong quality.

📊 Common Use Cases

Feature images for blog posts (1200×600)
Product photos where file size matters
Landing pages with “hero” images
Image-heavy tutorials (screenshots optimized down)
Portfolios and galleries

🧩 Tool Workflow

Input → Process → Output

Input: PNG/JPG/WebP
Process: decode → optional resize → encode AVIF
Output: .avif file + (recommended) a fallback format

Minimal diagram showing image input, processing, and AVIF output — Simple workflow: input → process → AVIF output.

⚠️ Mistakes → Fixes

Common mistake	What to do instead
Uploading a 4000px image for a 1200px layout	Resize first (match your theme’s real display size)
Using quality 95+ by default	Start at 80–85, only increase if needed
Publishing AVIF only	Publish AVIF + fallback for compatibility
Converting screenshots/photos with the same settings	Photos: quality-based; UI screenshots: test carefully and zoom in
Judging only by file size	Always verify visually (edges, text clarity, gradients)

✅ Checklist

✅ Click to open the pre-publish checklist

Resized the image to match the real layout width (no oversized uploads).
Converted the image to AVIF (quality starting at 80–85).
Created a fallback format (WebP or JPG) for compatibility.
Verified transparency needs (use PNG/WebP if required).
Opened the output and zoomed in to check edges and fine details.

✅ Click to open the performance checklist

Use lazy-load for images below the fold.
Set width and height attributes to reduce layout shift.
Compress feature images before upload (they are often the heaviest).
Use AVIF/WebP where possible, and keep a fallback for older browsers.

🧪 Mini Quiz

Test your understanding of AVIF and image conversion.

💡 What’s a safe starting AVIF quality for most photos?

80–85.

💡 Should you publish AVIF without a fallback?

Usually no. Use AVIF plus a fallback like WebP or JPG for compatibility.

💡 Where does this tool process your image?

Locally in your browser.

💡 What’s the biggest mistake that wastes file size?

Uploading oversized images instead of resizing to the real display size.

💡 Why might AVIF export not work in some browsers?

AVIF viewing support and AVIF exporting support are not always the same. The tool checks export support.

❓ FAQ

Quick answers to common questions about this topic.

❓ What is an AVIF file?

AVIF is the AV1 Image File Format, designed to store high-quality images at smaller file sizes, with support for modern features like transparency and wide color support.

❓ Is AVIF always smaller than WebP?

Often for photos, yes. But results vary by image type. Always test both and compare the output size and visual quality.

❓ Why is AVIF export not available in my browser?

Some browsers can view AVIF but do not support exporting AVIF via Canvas. This tool detects export support and disables AVIF conversion when unavailable.

❓ What AVIF quality should I use?

Start at 80–85 for photos. Increase slightly if you see detail loss, and reduce if file size is still too large.

❓ Does this tool upload my images?

No. Everything runs locally in your browser.

🔗 Recommended Reading

Image to AVIF Converter (PNG/JPG/WebP → AVIF)