Introducing webvitals.com: Find out what’s slowing down your site

Developers don’t need another “run this tool, stare at a number, and feel bad about it” website. So we built something different. WebVitals helps you analyze, o...

Sentry has a bold new look

As you may have noticed, Sentry just got a major glow-up. For too long our product looked like boring enterprise software, while our brand screamed bold and irr...

The Dawn of the 10x Team

Previously, I wrote about how debugging, whether done by humans or AI powered tools, depends on context. Without it, even the most capable systems can only tell...

Using Sentry Logs to Debug a Dynamic Sampling Issue

Some of the team at Sentry spent this past quarter fixing bugs, more than 800 to be exact. Among them was a complex issue causing transaction spikes in our own ...

Monitor and reduce your mobile app size with Size Analysis (Early Access)

This is man.jpg. And for some reason, this used to be in the Toyota iOS app at a non-negligible 14.6 MB. Conveniently, man.jpg was removed several months after ...

Not so "mini"-dumps: How we found missing crashes on SteamOS

We shipped an improvement to Sentry's game engine and native SDKs that most developers probably didn’t even notice until now – unless they were explicitly aimin...

AI Code Review: 30K Bugs Lighter, 50% faster

Last month, we launched AI Code Review, our developer tool that automatically catches bugs, finds performance issues, and helps you ship PRs faster. 30 days lat...

Unreal Engine crash reporting now available on gaming consoles with trace-connected logs

With the first major release of the Sentry Unreal SDK (now on v1.2.0, and you can also explore in our interactive sandbox), we’ve made some important improvemen...

Improving browser tracing step by step

Browser tracing has always been one of those things that feels invisible until it isn’t. When it works well, you get clear, actionable insights into how your ap...

Vibe Coding: Closing The Feedback Loop With Traceability

I have begun to truly embrace vibe coding over the last few months, using Cursor as my main code editor and Claude Sonnet 4 for my agent's LLM. It's an exciting...

Meet Sentry’s 2025 summer interns

At Sentry, interns aren’t just along for the ride, they’re part of the team. This summer, our crew of software engineers, biz ops problem-solvers, and even an a...

Session Replay: Becoming your own digital secret shopper

Retail stores have long relied on a secret weapon to measure and improve the shopping experience: the secret shopper. Posing as ordinary customers, they evaluat...

Sentry AI code review, now in beta: break production less

This could’ve been prevented. This should have been prevented. This too. We all hate getting tagged in PRs. The time, the blame for when you inevitably miss som...

Inside Sentry’s Hackweek: An excuse to break things

During Sentry’s Hackweek, many ‘sentaurs’ used the opportunity to build useful additions to the Sentry service to help provide value for years to come. Not us t...

I turned error messages into a sales machine (by accident)

Dan Mindru is a Frontend Developer and Designer who is also the co-host of the Morning Maker Show. Dan is currently developing a number of applications includin...

Frontend JavaScript performance testing: A comprehensive guide

When a page pauses for even a quarter-second users feel it, and many will tab away before the spinner stops. Front-end performance testing lets us spot those de...

How we used Sentry’s User Feedback widget to shape Logs throughout beta

At Sentry, we build in public and we move fast. But moving fast means we don’t always get everything right on the first try. That’s where feedback comes in: it ...

Debugging and logging in Laravel applications

Logic errors, failed HTTP requests, background jobs that ghost silently—software breaks in all kinds of fun ways. The difference between resilient systems and f...

Crash reporting for gaming consoles is now Generally Available

TL;DR: Error monitoring and crash reporting for all major gaming consoles is now generally available (plus, the v1.1 of our Unreal Engine SDK). Already convince...

SvelteKit observability just got 10x better, and we’re here for it

The Svelte Team recently announced full observability and tracing support for SvelteKit! This is great news for SvelteKit and Sentry users, since Sentry is alre...

Logs are Generally Available (Still logs, just finally useful)

When we started building Logs in Sentry we had one goal: make them useful for real debugging, not just another high-volume text storage. This meant making them ...

The core KPIs of LLM performance (and how to track them)

A few months ago, I built an MCP server for Toronto’s Open Data portal so an agent could fetch datasets relevant to a user’s question. I threw the first version...

How to measure and fix latency with edge deployments and Sentry

A 2017 study by Google, researchers found: As page load time goes from 1 to 3 seconds, the probability of bounce increases 32%. That was over 8 years ago. And l...

React Native performance tactics: Modern strategies and tools

This is a guest post by Simon Grimm, founder of Galaxies.dev, a platform dedicated to helping developers master React Native through hands-on courses, expert gu...

You built the MCP server. Now track every client, tool, and request with Sentry.

TL;DR - Starting today, you can instrument most server-side JavaScript SDK based MCP servers with one line of instrumentation code within your MCP SDK implement...

Common Unity errors and how to fix them

Unity has a reputation for handing out surprises: the play-mode freeze just after a hot-reload, the sudden sea of pink materials, or the stack trace that polite...

Boosting Session Replay performance on iOS with View Renderer V2

After making Session Replay GA for Mobile, the adoption rose quickly and more feedback reached us. In less great news, our Apple SDK users reported that the per...

Smarter debugging with Sentry MCP and Cursor

Debugging a production issue with Cursor? Your workflow probably looks like this: Alt-Tab to Sentry, copy error details, switch back to your IDE, paste into Cur...

Introducing new issue detectors: Spot latency, overfetching, and unsafe queries early

Not everything in production is on fire. Sometimes it’s just... a little warm. A page that loads a second too slow. An API that returns way more than anyone ask...

Evals are just tests, so why aren’t engineers writing them?

You’ve shipped an AI feature. Prompts are tuned, models wired up, everything looks solid in local testing. But in production, things fall apart—responses are in...

How Sentry could stop npm from breaking the Internet

Caching is great! When it works… When it fails, it puts a big load on your backend, resulting in either a self-inflicted DoS, increased server bills, or both. T...

Introducing Sentry's Godot SDK 1.0 Alpha, with support for Godot 4.5 Beta

Debugging during development is easy. You've got a debugger, stack traces, and logs right in front of you. But once your Godot game is in the hands of players, ...

Want to hear your users' complaints? There's a widget for that (now available on mobile)

A disappearing “Submit” button. A modal stuck half-offscreen. It's not a crash or a performance regression. Just broken UX. Frustrating enough to make users rag...

What You Actually Need to Monitor AI Systems in Production

You did it. You added the latest AI agent into your product. Shipped it. Went to sleep. Woke up to find it returning a blank string, taking five seconds longer ...

An open-source SDK for finding dead code

Writing code is easier than ever. We want to make deleting code just as easy – introducing Reaper for iOS and Android. Reaper was an Emerge Tools product that h...

Robust Time Series Monitoring: Anomaly Detection Using Matrix Profile and Prophet

Monitoring production systems often feels like searching for a moving needle in a constantly shifting haystack. At Sentry, our goal was to empower customers to ...

How Sentry’s Seer AI Agent passes legal review: a guide for legal teams reviewing Seer

(written by lawyers for lawyers but probably also comforting for those interested in using Seer but who don’t have lawyers) If your legal department is anything...

Introducing AI Agent Monitoring

AI is changing how we build software — but debugging code still comes down to having context. One minute the model’s performance is cruising. The next, you’re h...

Now you can use Sentry Insights to trigger alerts and debug issues

You deploy a fix late Friday and spend the weekend refreshing dashboards, hoping nothing breaks. You shouldn’t have to babysit a dashboard to know when somethin...

AI Test Generation and PR Review in Sentry (Now in Open Beta)

You write code. Open a PR. CI runs. PR merges. Prod’s on fire by 5pm. Maybe you skipped writing some tests. (It's tedious, sometimes unclear, and easy to ignore...

An open source tool to speed up iOS app launch

What do the Snapchat and Spotify iOS apps have in common? They use order files to speed up their iOS app launch times. Order files re-order your binary to impro...

Seer, Sentry’s AI Debugger, is Generally Available

Tired of trying to guess if that half-baked LLM suggestion is really going to fix the issue with your code? Meet Seer—our new AI agent that taps into all the is...

Introducing Sentry’s Flutter SDK 9.0 - Logs, Session Replay, Feature Flags, and more

If you've ever had to debug a Flutter app after an error report that just says “Null check operator used on a null value,” you already know: context is everythi...

Using the Sentry Unity SDK for Error and Crash Reporting

It’s one thing to debug your game during development, but once your game is in production, visibility into errors and failures in real gameplay is harder to ach...

Yes, Sentry has an MCP Server (...and it’s pretty good)

Unless you’ve been living under a rock, “MCP” is probably a term you’ve heard thrown around in the AI space. Each of the editors and LLM providers have been rac...

Introducing Session Health in Sentry (Now In Open Beta)

You push a release that touches the checkout flow. Now you’re glued to dashboards and checking Slack, hoping you didn’t introduce a regression that breaks the p...

From Alert to Fix in 10 minutes: How a Slow Query Took Down Placid.app

This is a guest post from Armin Ulrich, a fullstack developer, and founder of placid.app. He also created the MadeWith* network where he shares his projects and...

Get Better Visibility Into App Hangs On Apple Devices

App hangs are the worst kind of bug: they don’t crash, they don’t log, and unless you're actively profiling, good luck catching them in the debugger. Maybe the ...

Logs in Sentry: Now in Open Beta

You’re looking at an error in Sentry—a failed payment in your Flask backend or an unexpected null in your Node API. You’ve got the stack trace. The request deta...

Want AI to be better at debugging? It’s all about context

More code is being shipped today than ever before, accelerated by AI powered code gen tools. We’re in a golden age for builders. But here’s the thing: software ...

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