Skip to main content

PNG Converterv1.0.0

Convert between PNG images, Base64-encoded strings, and SVG vector graphics entirely in the browser with instant preview and one-click download. Handles drag-and-drop file input, direct Base64 text pasting, and SVG-to-PNG rasterization at configurable output dimensions with optional transparent or white backgrounds.

Runs entirely in your browser

This tool sends nothing over the network. Everything you enter is processed on your device and never reaches our servers.

Development
Web
Loading the tool
Reference

Documentation

Convert PNG images to Base64-encoded text strings, decode Base64 strings back into downloadable PNG files, or rasterize SVG vector graphics into PNG bitmaps directly in the browser. No files leave the device during conversion; all processing runs locally through the Canvas API and FileReader interface.

  • Select a Conversion Mode from the three radio options at the top: PNG to Base64, Base64 to PNG, or SVG to PNG. The input fields update automatically to match the selected mode.
  • For PNG to Base64, click Select a PNG or SVG file or drag and drop a PNG image onto the drop zone. After loading, press Convert to produce the full Base64 data URI string. The output appears in the Base64 Output textarea, ready to copy into CSS, HTML, or API payloads.
  • For Base64 to PNG, paste a Base64-encoded PNG string into the Paste Base64-encoded PNG string textarea. The string may include the data:image/png;base64, prefix or omit it. Press Convert to decode the string and render a preview image with a Download PNG button.
  • For SVG to PNG, upload an SVG file through the file input or paste raw SVG markup into the Paste SVG markup textarea. Specify optional Width and Height in pixels to control the output resolution. Leave either field blank to preserve the original aspect ratio. Toggle the Transparent background checkbox to control whether the rasterized PNG retains transparency or fills with a white background. Press Convert to rasterize the vector and produce a downloadable PNG.
  • After conversion, use the Copy Base64 button to copy encoded output to the clipboard or the Download PNG button to save the resulting image file.
  • Press Reset to clear all inputs, outputs, and stored preferences, returning every field to its default state.
  • All inputs and mode selections persist across page reloads through localStorage. Returning to the page restores the previous session state so work in progress is not lost.
  • Supported input formats include standard PNG files (8-bit and 24-bit color, with or without alpha), Base64 strings with or without the data URI prefix, and well-formed SVG documents. Files containing malformed data or unsupported formats trigger an inline notification describing the problem.

PNG, Base64, and SVG interconversion covers a range of workflows across web development, documentation, design handoff, and data processing. Below are practical scenarios where switching between these formats addresses a specific requirement.

  • Web Development: Embed small icons and UI elements as Base64 data URIs directly in CSS or HTML to eliminate extra HTTP requests and reduce page load overhead for above-the-fold assets.
  • Email Templates: Inline Base64-encoded images in HTML email bodies to avoid broken image links caused by restrictive email clients that block external resource loading.
  • API Integration: Encode PNG screenshots, receipts, or thumbnails as Base64 strings for inclusion in JSON request payloads sent to REST endpoints that do not accept multipart file uploads.
  • Design Handoff: Rasterize SVG mockups and icon sets into fixed-resolution PNG files at exact pixel dimensions required by platform asset specifications, such as app store icons at 1024 by 1024 pixels.
  • Documentation: Convert SVG diagrams and flowcharts into PNG format for embedding in PDF reports, Word documents, and presentation slides that do not render vector graphics natively.
  • Print Production: Export SVG logos and illustrations as high-resolution PNG bitmaps at specific DPI-equivalent dimensions for print-ready layouts where vector support is unavailable.
  • Data Recovery: Decode Base64 image strings extracted from database records, log files, or API response dumps back into viewable and downloadable PNG files for inspection and archival.
  • Prototyping: Quickly rasterize SVG wireframes at multiple resolution breakpoints to preview how vector assets render at mobile, tablet, and desktop sizes before committing to a final export pipeline.
  • Content Management: Convert user-uploaded SVG files into PNG thumbnails at a standardized resolution for display in content management system galleries that require raster image previews.
Inputs, outputs, and what the PNG Converter computes

The form above accepts the following inputs and produces the outputs listed below. This summary is rendered in the page so the parameters are visible to crawlers, assistive tech, and indexing agents that don't fetch the embedded tool frame.

Inputs

  • PNG to Base64 · default: png-to-base64
  • Base64 to PNG · default: base64-to-png
  • SVG to PNG · default: svg-to-png
  • Paste Base64-encoded PNG string
  • Paste SVG markup (optional, alternative to file upload)
  • Width (px) (numeric input) · range: 1 to 10000
  • Height (px) (numeric input) · range: 1 to 10000
  • Transparent background
  • Base64 Output

Controls

Convert · Reset · Copy Base64 · Download PNG

Worked example

Convert PNG images to Base64-encoded text strings , decode Base64 strings back into downloadable PNG files, or rasterize SVG vector graphics into PNG bitmaps directly in the browser.