tweak: mock and modify HTTP requests
Developer Tools
Likely PaidConfidence 92Platform Paddle
Mock or modify your HTTP requests to test, develop and demo your web application
Users
60K
Rating
4.6
Reviews
238
7D Growth
0|0%
Stable signalNo paid features detectedMedium-risk permissions
HAR/JSON viewer
Visualizes HTTP Archive (HAR) files opened locally or online. Also features JSON tree view for HAR and any structured JSON files.
Users10KCurrent public install base
Rating4.3Store average score
Reviews6Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
3 assetsHAR/JSON viewer Media preview
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7-day rating change
Start
4.33
Latest
4.33
7-day rating change
0.00
2026年7月14日2026年7月20日
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Version1.5.0
ManifestV3
Size133KiB
Languages1English
Published
Store updated
Last crawled
English
Overview
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Embedded HAR/JSON viewer. Visualizes HTTP Archive (HAR) files opened locally or online. Also features JSON tree view for HAR and any structured JSON files. Allows to switch between HAR (if available), JSON tree and plain (original) views.
Note: In order to get this viewer working with local files you have to grant the respective permission: chrome://extensions -> HAR/JSON viewer -> Details -> Allow access to File URLs.
Reviews
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Store average score4.3Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.3Average computed only from synced review bodies below
Reviews with text6Synced review bodies
Total ratings / reviews6Chrome Web Store public rating/review count
Store average score: 4.3. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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hi, after install this extension, go to chrome://extensions/, then founded related card about this (HAR/JSON viewer) and then press Details, after that in this page Turn on "Allow access to file URLs", now you can open or drag and drop file into chrome so address bar became such as this : file:///C:/Users/Amin/Downloads/something.har after that by click on extension button on right top side icon ( or in extensions menu ) you see the result, thanks alot, hope to God
Great extension, just what i needed if it doesn't work for your local files just give it the permission in the extension setting page
Compare to the HAR file viewer provided by Chrome, this one is better. The visualization shows the network logs very detailed and informative. Thank author
works well. instructions could saved me some time. instructions: drop har file into chrome. open extensions and a request from this plugin would show. accept it and you will view the plugin analysis.
It doesn't work at all. Yes, allow access to file URLs is on. Yes, the icon is visible at the top. Loading a HAR file just shows the JSON, nothing else. Clicking the icon for this does nothing. If there's something else to do, then that needs to be in the instructions for the extension. I see 2 others having the same problem in the Support pane. I guess the extension has rotted.
Nice extension, simple but powerful. Works with all JSONs, however it is most suitable for HAR files. Its visualization tool is amazing!