CID to PNG Converter

Render CID-keyed font glyphs as crisp PNG images online

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Lossless Quality

PNG preserves every detail of your CID font glyphs with zero compression artifacts — stroke edges, serifs, and CJK radicals render flawlessly.

Cloud-Based Rendering

Rasterization runs on Convertio servers, so even large CID fonts with thousands of CJK characters are processed without taxing your machine.

Bulk Font Preview

Upload multiple CID fonts and generate PNG previews for each in one session — great for building visual font catalogs quickly.

How to convert CID to PNG

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose png or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your png file right afterwards

About formats

CID (Character Identifier) is a font architecture developed by Adobe Systems and specified in June 1993 to address the challenges of fonts containing very large glyph sets, particularly for CJK (Chinese, Japanese, Korean) scripts. Traditional PostScript fonts identify glyphs by name, which becomes impractical when a font contains tens of thousands of characters — a typical Japanese font may include over 20,000 glyphs. CID-keyed fonts replace glyph names with numeric identifiers organized by a character collection and ordering (such as Adobe-Japan1 or Adobe-GB1), dramatically reducing overhead for glyph access and subsetting. The architecture defines three PostScript font types: Type 9 (CID-keyed Type 1 outlines), Type 10 (CID-keyed Type 3), and Type 11 (CID-keyed Type 42/TrueType). A primary advantage is efficient handling of massive character sets — the numeric CID approach eliminates the memory and processing cost of maintaining thousands of glyph name strings. CID fonts also support sophisticated CMap resources that map encoding values to CIDs, enabling a single font to serve multiple encoding schemes (Unicode, Shift-JIS, Big5) without duplicating glyph data. The architecture integrates well with PDF subsetting, allowing documents to embed only the glyphs actually used. CID-keyed technology laid the foundation for CJK support in both OpenType and modern PDF workflows, and remains active in print production and document processing systems worldwide.
Developer: Adobe Systems
Initial release: June 11, 1993
PNG (Portable Network Graphics) is a lossless raster image format developed by the PNG Development Group and published as a W3C Recommendation on October 1, 1996, created as a patent-free replacement for GIF after the Unisys LZW patent controversy. PNG uses a two-stage compression pipeline: a prediction filter selects the optimal per-row preprocessing (none, sub, up, average, or Paeth), then DEFLATE compression encodes the filtered data. The format supports rich color modes — 1/2/4/8/16-bit grayscale, 8/16-bit per channel true color, and indexed color with palettes up to 256 entries — all with optional alpha transparency ranging from a single transparent color to a full per-pixel alpha channel with 256 or 65536 levels. PNG also stores gamma correction, ICC color profiles, text metadata, and suggested background color. One advantage is lossless compression with transparency — PNG preserves every pixel exactly while supporting smooth semi-transparent edges, making it the standard format for web graphics, UI elements, logos, screenshots, and any image where artifacts or color shifts are unacceptable. Universal support is another core strength: every web browser, operating system, image editor, and programming library handles PNG natively. The format has proven remarkably durable — after nearly three decades, PNG remains the default lossless web image format. While newer formats like WebP and AVIF offer better compression, PNG's combination of lossless quality, full transparency, and absolute ubiquity keeps it indispensable.
Initial release: October 1, 1996

Frequently Asked Questions

Why convert CID to PNG?

PNG gives you a lossless image of your CID glyphs — perfect for visual proofing, font specimen sheets, or embedding character samples in documents.

How do I view PNG images?

Every modern device opens PNG natively — web browsers, image viewers, photo editors, and office suites all handle the format without extra software.

Will the text remain sharp in PNG?

PNG uses lossless compression, so glyph edges stay pixel-perfect with no artifacts. Ideal for detailed inspection of CJK character strokes.

Can I convert multiple CID fonts at once?

Yes — batch upload several CID fonts and Convertio will produce a separate PNG for each, streamlining large proofing workflows.

Is CID to PNG conversion free?

It is. Upload, convert, and download your PNG images at no charge — all processing happens in the cloud.

CID to PNG Quality Rating

3.0 (1 votes)
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