---
name: Convert a ReadableStream to a Blob
---

Bun provides a number of convenience functions for reading the contents of a [`ReadableStream`](https://developer.mozilla.org/en-US/docs/Web/API/ReadableStream) into different formats.

```ts
const stream = new ReadableStream();
const blob = await Bun.readableStreamToBlob(stream);
```

---

See [Docs > API > Utils](/docs/api/utils#bun-readablestreamto) for documentation on Bun's other `ReadableStream` conversion functions.
<a href='/ansg191/YubiKey-Guide/'>YubiKey-Guide</a></td><td class='form'><form method='get'>
<select name='h' onchange='this.form.submit();'>
<option value='master' selected='selected'>master</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Unnamed repository; edit this file 'description' to name the repository.</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/ansg191/YubiKey-Guide/about/'>about</a><a href='/ansg191/YubiKey-Guide/'>summary</a><a href='/ansg191/YubiKey-Guide/refs/'>refs</a><a class='active' href='/ansg191/YubiKey-Guide/log/switch-to-backup-yubikey?follow=1'>log</a><a href='/ansg191/YubiKey-Guide/tree/switch-to-backup-yubikey'>tree</a><a href='/ansg191/YubiKey-Guide/commit/switch-to-backup-yubikey?follow=1'>commit</a><a href='/ansg191/YubiKey-Guide/diff/switch-to-backup-yubikey?follow=1'>diff</a></td><td class='form'><form class='right' method='get' action='/ansg191/YubiKey-Guide/log/switch-to-backup-yubikey'>
<select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/ansg191/YubiKey-Guide/log/?follow=1'>root</a>/<a href='/ansg191/YubiKey-Guide/log/switch-to-backup-yubikey?follow=1'>switch-to-backup-yubikey</a> (<a href='/ansg191/YubiKey-Guide/log/switch-to-backup-yubikey'>unfollow</a>)</div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/ansg191/YubiKey-Guide/log/switch-to-backup-yubikey?showmsg=1&amp;follow=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
<tr><td><span title='2025-05-10 17:47:40 -0700'>2025-05-10</span></td><td><a href='/ansg191/YubiKey-Guide/commit/scripts/generate.sh?id=04dbdf35c3ecc14ca27ecc6abf3ff9c2c1dfbfe4&amp;follow=1'>label each step</a></td><td><img src='//www.gravatar.com/avatar/11e7e5036361ecbeae5e1a1204a508f6?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> drduh
</td><td>1</td><td><span class='deletions'>-10</span>/<span class='insertions'>+21</span></td></tr>
<tr><td><span title='2025-05-10 17:25:26 -0700'>2025-05-10</span></td><td><a href='/ansg191/YubiKey-Guide/commit/scripts/generate.sh?id=d66ac5381fd02a3aa01b3d296c0a12af238448ee&amp;follow=1'>delint and print id strings</a></td><td><img src='//www.gravatar.com/avatar/11e7e5036361ecbeae5e1a1204a508f6?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> drduh
</td><td>1</td><td><span class='deletions'>-18</span>/<span class='insertions'>+29</span></td></tr>
<tr><td><span title='2025-05-10 17:08:04 -0700'>2025-05-10</span></td><td><a href='/ansg191/YubiKey-Guide/commit/scripts/generate.sh?id=f48c9fa3eeab81f7ebfd700df9efc72a955319c8&amp;follow=1'>finish by printing certify and encrypt passphrases</a></td><td><img src='//www.gravatar.com/avatar/11e7e5036361ecbeae5e1a1204a508f6?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> drduh
</td><td>1</td><td><span class='deletions'>-14</span>/<span class='insertions'>+40</span></td></tr>
<tr><td><span title='2025-05-10 16:57:30 -0700'>2025-05-10</span></td><td><a href='/ansg191/YubiKey-Guide/commit/scripts/generate.sh?id=e457f049825df674e09b4fd6dc6e86666d2fa6f1&amp;follow=1'>set passphrases function</a></td><td><img src='//www.gravatar.com/avatar/11e7e5036361ecbeae5e1a1204a508f6?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> drduh
</td><td>1</td><td><span class='deletions'>-35</span>/<span class='insertions'>+37</span></td></tr>
<tr><td><span title='2025-05-10 16:45:23 -0700'>2025-05-10</span></td><td><a href='/ansg191/YubiKey-Guide/commit/scripts/generate.sh?id=1064d2e742431cc9487d1dcd2a441a93a2b6ab87&amp;follow=1'>print configured id/key attributes</a></td><td><img src='//www.gravatar.com/avatar/11e7e5036361ecbeae5e1a1204a508f6?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> drduh
</td><td>1</td><td><span class='deletions'>-12</span>/<span class='insertions'>+18</span></td></tr>
<tr><td><span title='2025-05-10 16:40:00 -0700'>2025-05-10</span></td><td><a href='/ansg191/YubiKey-Guide/commit/scripts/generate.sh?id=4fe4b8c157fc758ae6e7490893822bdcf2f827f6&amp;follow=1'>temp dir and label functions</a></td><td><img src='//www.gravatar.com/avatar/11e7e5036361ecbeae5e1a1204a508f6?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> drduh
</td><td>1</td><td><span class='deletions'>-3</span>/<span class='insertions'>+19</span></td></tr>
<tr><td><span title='2025-05-10 16:31:51 -0700'>2025-05-10</span></td><td><a href='/ansg191/YubiKey-Guide/commit/scripts/generate.sh?id=cbd39ffbb06e4e2ea3abed5b6e3d5fdee39818ab&amp;follow=1'>save mats functions</a></td><td><img src='//www.gravatar.com/avatar/11e7e5036361ecbeae5e1a1204a508f6?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> drduh
</td><td>1</td><td><span class='deletions'>-12</span>/<span class='insertions'>+27</span></td></tr>
<tr><td><span title='2025-05-10 16:27:14 -0700'>2025-05-10</span></td><td><a href='/ansg191/YubiKey-Guide/commit/scripts/generate.sh?id=1ab20d5fea38a45da42a29c5a0bb7b69912d9742&amp;follow=1'>gen key functions</a></td><td><img src='//www.gravatar.com/avatar/11e7e5036361ecbeae5e1a1204a508f6?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> drduh
</td><td>1</td><td><span class='deletions'>-13</span>/<span class='insertions'>+30</span></td></tr>
<tr><td><span title='2025-05-10 16:21:48 -0700'>2025-05-10</span></td><td><a href='/ansg191/YubiKey-Guide/commit/scripts/generate.sh?id=f2c4ca3e689776942c83e73416de5f204fda3cde&amp;follow=1'>get pass function</a></td><td><img src='//www.gravatar.com/avatar/11e7e5036361ecbeae5e1a1204a508f6?s=13&amp;d=retro' width='13' height='13' alt='Gravatar' /> drduh
</td><td>1</td><td><span class='deletions'>-10</span>/<span class='insertions'>+11</span></td></tr>