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Guides
Pick the right format before you convert
What each format keeps, what it throws away, and when converting is the wrong move — written for the formats this converter supports.
HEIC to JPG: Why iPhone Photos Refuse to Open, and What Converting Changes
Why HEIC photos from an iPhone fail to open on Windows, Android and older software, what a JPG conversion keeps or discards, and how to avoid quality loss.
7 min readPNG to JPG: What You Gain, What You Lose, and When to Keep the PNG
Converting PNG to JPG: why the file shrinks, what happens to transparency, text and logos, and how to pick a quality setting that survives review.
6 min readPDF to JPG: Rendering Pages at a Resolution That Still Reads
Turn PDF pages into JPG images: choosing DPI, handling multipage files, keeping text legible, and knowing when PNG is the better output.
5 min readMOV to MP4: Making iPhone and Mac Video Play Everywhere
Why MOV files fail on Windows, Android and the web, when a MOV to MP4 conversion can copy the video untouched, and when it must re-encode.
6 min readFrequently asked questions
Quick answers about converting files on Convertek.
- Is Convertek free to use?
- Yes. Convertek is free to use with fair upload limits (typically 30 MB per non-video file and 100 MB for video). Converted files have no watermarks.
- Can I convert mixed file types in one batch?
- Yes. Drop different types (for example PNG, PDF, and MP3) into one queue and choose a separate output format for each file.
- Do you keep my uploaded files?
- Files are processed temporarily on the server. Converted downloads stay in your browser storage. We do not keep a permanent personal cloud library of your files.
- What formats does Convertek support?
- Convertek supports 100+ formats across images, documents, data, audio, video, archives, fonts, subtitles, presentations, and ebooks. Browse the full list at /conversions.