Private PNG to JSON Converter | Convert PNG to JSON Offline

100% Free User-Side

PNG to JSON

Free PNG to JSON converter. Convert PNG images into structured JSON documents with embedded Base64 data URIs, dimensions, and metadata 100% offline.

PNG - up to 100MB each

Drop your images here

or click anywhere to browse files

PNG - up to 100MB each

How to Convert PNG to JSON?

Upload PNG Images

Drop your PNG files into the upload zone above, or click to choose files from your device. You can convert multiple files at once.

Adjust Advanced Options (Optional)

Click the settings panel if you need to resize the images, customize background, or adjust PSD export parameters.

Download Converted JSONs

Click 'Convert to JSON' to process. You can download the PSDs individually or as a single ZIP archive.

Structured Metadata

Includes width, height, aspect ratio, formatted file size, and timestamp in standard JSON format.

Developer Ready

Output JSON schema is ready for instant use in REST APIs, React, Vue, Canvas, and state management.

100% Offline & Private

No network transfers. All graphics stay entirely inside your local device memory for complete cryptographic privacy.

What is a PNG (Portable Network Graphics) file?

PNG, standing for Portable Network Graphics, is a widely used raster image format designed for the web. Created by the PNG Development Group as an open-source, non-patented successor to GIF, PNG files are saved with the .png extension. They feature lossless data compression, which ensures that intricate illustrations, high-contrast text, sharp borders, and alpha transparent layers are preserved without any loss of quality.

Why convert PNG to JSON?

Converting PNG to JSON extracts dimensions, color arrays, and Base64 image payloads into a clean JSON structure, perfect for REST API data transfers, web app state storage, and game asset management.

Developed by: PNG Development Group

Initial Release: October 1, 1996

What is a JSON (JavaScript Object Notation) file?

JSON, which stands for JavaScript Object Notation, is a lightweight, text-based data interchange format. Saved with the .json extension, it structures data using key-value pairs and ordered lists. In graphic workflows, converting images to JSON packages pixel matrices, Base64 strings, and image dimensions into an easily readable format for API communication and software state storage.

How to open and use a JSON file?

Opening and utilizing JSON documents is universally supported across every modern programming language (JavaScript, Python, Go, Java, C#), web browsers, and API test suites (Postman, Thunder Client). If you need to convert your PNG files into structured JSON objects, our client-side converter processes your images instantly inside your web browser without uploading your data to any cloud servers.

Developed by: Douglas Crockford

Initial Release: 2001

FAQs

Can I convert PNG to PSD free of charge and without limits?

Absolutely. You can convert PNG to PSD free with no hidden paywalls, no watermarks, and no daily file caps. It is a completely free image converter built for developers and designers.

Why is a client-side PNG to PSD converter safer for personal photos?

An offline architecture ensures that sensitive documents, artwork, or proprietary design mockups remain entirely inside your device memory. As a secure local PNG converter no server upload, it provides total cryptographic privacy because your files never leave your browser.

Does PSD support PNG transparency?

Yes! Our PSD generator writes standard 32-bit RGBA planar data that completely preserves translucent and transparent graphics with zero black background artifacts.

Why Choose Our PNG to JSON Converter?

We designed our tool to be the fastest and safest option available. Here’s how our private PNG to JSON converter gives you an edge:

100% Private & Secure: All processing happens locally on your device. Since there is no server upload, your personal and sensitive images are never stored or seen by anyone else.
Preserve Transparency: Clean alpha transparency retention guarantees your graphics and icons render flawlessly.
Instant Performance: Enjoy unthrottled speeds with zero cloud latency. Whether you use it on a desktop or need to convert PNG to JSON on mobile, it feels like a native app.
Bulk ZIP Packaging: Process multiple images in seconds and download them all together in a single convenient ZIP file.

About this tool

The PNG to JSON converter by FreeImgLab offers a fast and clean way to serialize raster graphics into structured JSON objects with embedded Base64 Data URIs directly from your browser. Fully private and offline.