博客
关于图片、文本、代码和设计的指南与技巧。
Audio & Video Tools
How to Convert MP4 to MP3 (Free, No Upload, Any Device)
Need the sound from a video as an MP3? Here is how to convert MP4 to MP3 for free in a few seconds, without installing software or uploading your video, plus which bitrate to choose and how to keep only part of the audio.
2026年10月8日 · 阅读约 5 分钟
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How to Change a Passport Photo Background to White (Free)
Took your passport photo at home against a colored wall? Here is how to change the background to plain white or light grey for free, size it for your country and keep it under the upload limit, without sending your face to a server.
2026年10月8日 · 阅读约 5 分钟
200x200 Image Converter: Perfect for Medium Profile Pictures
Need 200x200 for Discord or forums? Don't just crop it.
2026年2月1日 · 阅读约 1 分钟