Fiddler Ideas

The free web debugging proxy for any browser, system or platform.

4 VOTE

Time delay on replay feature

i would like a feature to be added to fiddler, when you replay a request/response if you could set a time delay in numbers of minutes/seconds from the next replayed request/response is sent 🤔 its so so that replays don't issue too quickly.

Created almost 3 years ago by Guest

Feature Enhancement

2 Needs review
5 VOTE

TLS handshake inspection

To my knowledge, a Fiddler extension has no means of getting the raw TLS handshake data. This would be extremely useful for some extensions I develop. Two use cases are, first, getting the TLS extensions. The primary motivation for this is to ...

Created over 3 years ago by Guest

Feature Enhancement

2 Needs review
4 VOTE

Support Sec-WebSocket-Extensions: permessage-deflate

WebSockets offer a mechanism for doing compression of messages. Fiddler's WebSocket Inspector should provide a simpler means of viewing such content. The mechanism looks to be a simple DEFLATE operation: https://tools.ietf.org/html/rfc7692

Created almost 3 years ago by Eric Lawrence

Feature Enhancement

2 Researching
4 VOTE

Better support HiDPI displays

I use Windows 2016 / Windows 10 VMs on a MacBook Pro (with ESC key :-) with Retina Display. All Windows version run fine with HiDPI resolution. Only thing is that Fiddler4 shows its texts in a lower resolution, so all texts have the right size, b...

Created almost 3 years ago by Guest

Feature Enhancement

4 Needs review
3 VOTE

Regression: Fiddler no longer in AppPaths

ShellExecute("Fiddler") no longer works because Fiddler is no longer registered in the APP PATHS registry key. This breaks a 14-year-old mechanism of launching Fiddler. Incidentally, It appears that Fiddler now installs on a per-user basis /by de...

Created about 2 years ago by Eric Lawrence

Bug

1 Needs review
4 VOTE

Suppress spamming of system debug console on Telerik Analytics upload failure

Recently Fiddler has taken to flooding OutputDebugString with the message (from DebugView): [5936] Telerik Analytics Monitor ***** ERROR *****: Recovered session data could not be sent: 0 Request failed: NameResolutionFailure: No se puede...

Created about 3 years ago by Eric Lawrence

Bug

1 Researching
4 VOTE

Allow searching of logged composer requests

We love the log requests history option in the composer and over time we build up several hundred items. It would be great if there was a simple text search of urls and content to find logged requests we want to tweak or rerun. Less important we ...

Created about 3 years ago by Nicholas van Esch

Feature Enhancement

2 Needs review
4 VOTE

Update HTTPS handshake analyzer with GREASE values

Chrome is going to start sending out random TLS extensions to blow up buggy servers. Fiddler should add the reserved values to the automatic classifier that runs on each HTTPS handshake. https://tools.ietf.org/html/draft-davidben-tls-grease-01

Created about 3 years ago by Eric Lawrence

Feature Enhancement

0 Needs review
2 VOTE

Websocket playback and general handling improvements

In my line of work (security research), WebSockets are becoming increasingly common as a way to mask malicious activity. Fiddler does allow you to view a WebSocket and display the blobs exchanged. However, I have ran into some issues when the data...

Created over 1 year ago by Guest

Feature Enhancement

1 Needs review
2 VOTE

View JSON in TextWizard

I would like to send a string to TextWizard and view it as a JSON tree, just like in the JSON inspector.

Created over 1 year ago by Guest

Feature Enhancement

1 Needs review