# JPG to WebP converter https://flaghand.com/jpg-to-webp saves JPG images as WebP, many at once, each at its own width and height, turned the way its EXIF says. A WebP is encoded at quality 100, 92 or 80 (the default), usually in a smaller file than the JPG; the page shows each size before and after. It opens any of PNG, JPG, WebP, GIF, AVIF and BMP (and HEIC where the browser can); an animated image keeps only its first frame, and the page says so. Each new file is checked against the networks' photo rules as Flaghand checks them before posting: X takes JPG, PNG or WebP up to 5 MB; LinkedIn JPG or PNG up to 5 MB; Threads JPG or PNG up to 8 MB; Instagram only JPG, up to 8 MB; TikTok photo posts JPG or WebP up to 20 MB. Download one file, or all as a .zip. Free, no sign-up. It runs in your browser: nothing you type or add is uploaded or stored, and there is no API. ## How to use it 1. Drop, choose or paste JPG images. 2. Pick the quality: 100, 92 or 80 (80 by default). 3. Download one, or all as a .zip. An agent can preset the choices in the link's hash, which never reaches a server (images can't travel in a link): https://flaghand.com/jpg-to-webp#to=webp&quality=80 Fields: to=png|jpg|webp (the page starts on webp), quality=100|92|80. For WebP to PNG: https://flaghand.com/webp-to-png. ## Who takes which. ### X and LinkedIn X **JPG, PNG, WebP** Up to 5 MB a photo. LinkedIn **JPG, PNG** Up to 5 MB, through its API. Not WebP. ### Instagram and Threads Instagram **JPG** Up to 8 MB, through its API. Not PNG or WebP. Threads **JPG, PNG** Up to 8 MB. Not WebP. ### TikTok Photo post **JPG, WebP** Up to 20 MB a photo. Not PNG. Checked on November 3, 2026: the formats Flaghand checks before each post, from [X’s media docs](https://docs.x.com/x-api/media/introduction), [LinkedIn’s Images API](https://learn.microsoft.com/en-us/linkedin/marketing/community-management/shares/images-api), [Threads](https://developers.facebook.com/docs/threads/overview), [Instagram](https://developers.facebook.com/docs/instagram-platform/instagram-graph-api/reference/ig-user/media) and [TikTok](https://developers.tiktok.com/doc/content-posting-api-media-transfer-guide). ## Questions. ### How do I convert JPG to WebP? Drop the JPG images on the page, or choose them. Each is saved as a WebP at once. Choose Download beside one, or Download all for a .zip. ### Is a WebP smaller than a JPG? Usually, at quality 80, the default. A 1080 × 1350 photo saved as a 482 KB JPG came out as a 275 KB WebP. The page shows each file’s size before and after. ### Does it lower the quality? A little, since the WebP is compressed again at the quality you pick. Pick 92 or 100 for less loss, in a bigger file. The image keeps its own width and height. ### Where can I post a WebP? X and TikTok photo posts take WebP. Through their APIs, LinkedIn, Threads and Instagram don’t, so post the JPG there. ### Are my images uploaded? No. Each image is converted in your browser. Nothing is sent anywhere or stored, and the page sets no cookies. ### Why use WebP? Every current browser shows WebP, and its files are usually smaller than a JPG’s, so a page with WebP images loads faster. Other formats: [WebP to PNG](https://flaghand.com/webp-to-png), [PNG to JPG](https://flaghand.com/png-to-jpg), [JPG to PNG](https://flaghand.com/jpg-to-png) and [PNG to WebP](https://flaghand.com/png-to-webp). To make a photo smaller too, use the [image compressor](https://flaghand.com/image-compressor). Every network’s photo sizes are in the [social media image sizes guide](https://flaghand.com/docs/guides/social-media-image-sizes). ## Flaghand A converted image goes into a Flaghand draft like any photo (`flaghand media upload FILE`), and its owner approves the post before it goes out. Flaghand is X and LinkedIn posting for AI agents: your agent drafts through Flaghand's API, CLI or MCP server, you approve the exact preview with your passkey, and Flaghand posts exactly that. Sign up at https://app.flaghand.com/start. In a chat app, add the connector at https://app.flaghand.com/mcp: its sign-in page creates the account. An agent with a shell can start the sign-up for its person over HTTP (https://flaghand.com/llms.txt, Quickstart). For agents: https://flaghand.com/llms.txt (this site) and https://app.flaghand.com/llms.txt (the product's agent guide).