ICO to PDF | Fast & Free & Secure
Convert ICO to PDF online in seconds. No signup. Secure processing; files auto-delete in ~2h. Works on mobile & desktop.
Smart Auto-Detection – ConvertSea
No need to select your file type — we've already detected it.
Just upload your file and choose the format you want to convert it to. Our system automatically recognizes the input format, so you can focus on getting the output you need.
What is ICO?
ICO is the Windows icon format: a small container that bundles multiple bitmap images at different sizes and color depths into a single .ico file. Typical entries include 16×16, 32×32, 48×48, and 256×256 pixels, with 24-bit or 32-bit color and alpha transparency. Modern ICO images may be stored as PNG (compressed) or legacy BMP (uncompressed), allowing crisp edges and smooth scaling across displays. ICO files are used for application and file icons in Windows and as classic website “favicon.ico,” though browsers also accept PNG/SVG today. You can create or convert ICO with tools like IcoFX, GIMP, Photoshop (plugins), ImageMagick, and many online converters. Because ICO is a simple container, it’s broadly supported and easy to generate from SVG or high-resolution PNG sources.
What is PDF?
PDF (Portable Document Format) is a fixed-layout file format designed to present documents consistently across devices and operating systems. A .pdf can embed fonts, vector graphics, images, layers, hyperlinks, bookmarks, and metadata so pages render the same everywhere. The format supports interactive forms (AcroForm/XFA), annotations, encryption, permissions, and digital signatures for workflow and security. Accessibility features include tagging, alternate text, and reading order; specialized profiles like PDF/A target long-term archiving. PDFs open in Adobe Acrobat, most web browsers, and free tools, and export cleanly to print or formats like Word or images when needed. Typical uses include contracts, manuals, research papers, invoices, and brochures where precise layout matters. Because PDF is an ISO standard (ISO 32000), it’s widely supported and reliable for sharing and preservation.
Upload Your File
Upload your file (drag & drop or click). Input type is auto-detected—no need to choose it.
Pick Format & Options
Pick the output format and (if available) adjust options like OCR, quality, bitrate, or resolution.
Convert & Download
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Convert Your Files Instantly – Fast, Secure & Free
Welcome to ConvertSea, the ultimate online tool to convert your files with speed, accuracy, and zero hassle. Whether you're changing image formats, converting videos, editing documents, or extracting audio, our platform delivers instant, high-quality results across hundreds of file types.
No downloads, no registration, and no watermarks — just upload your file, choose the format you need, and download your converted file in seconds.
From PDF to Word, MP3 to WAV, JPG to PNG, or MP4 to MOV, ConvertSea ensures that your content stays clean, secure, and exactly how you want it.