Analyze CloudWatch logs without leaving AWS.

The smplogs browser extension adds a one-click analyze button to the CloudWatch Logs console. Select a log group, click analyze, and get findings instantly - no export, no file upload, no data sent anywhere.

Chrome Chrome Firefox Firefox Edge Edge Brave Brave

How it works

1

Open any CloudWatch log group

Navigate to a Lambda, API Gateway, or ECS log group in the AWS CloudWatch console. Both the Log Events view and Logs Insights work.

2

Click the smplogs button

The extension injects an analyze button into the CloudWatch console UI. Click it to capture the visible log events. No data leaves your browser - the extension reads the DOM directly.

3

Get findings instantly

The extension opens smplogs with your log data pre-loaded. The WASM engine analyzes locally and produces severity-ranked findings, root cause analysis, and log signature clusters.

What you get

Severity-ranked findings

Cold starts, error rate spikes, timeouts, memory pressure, throttling - ranked from CRITICAL to LOW with actionable recommendations.

Root cause analysis

Correlates error patterns across your logs to surface the underlying issue - not just the symptoms.

Log signature clustering

Groups similar log lines into signatures with frequency counts, so you can spot the noisiest patterns at a glance.

Zero-knowledge analysis

Everything runs in your browser via WebAssembly. No log data is ever transmitted. Same engine, same results as the web app.

Supported services

AWS Lambda

Cold starts, error rates, duration percentiles, memory usage, timeout detection, and throttling events.

API Gateway

HTTP error rates, latency distribution, 4xx/5xx breakdown, endpoint-level analysis, and integration errors.

Amazon ECS

OOM kills, container restart patterns, log level distribution, and error signature clustering.

Privacy and security

  • -The extension reads log data from the CloudWatch console DOM - it does not make API calls to AWS on your behalf
  • -Log data is passed to smplogs.com via a secure postMessage with nonce validation - never through a network request
  • -All analysis happens locally in your browser using WebAssembly - no log content reaches any server
  • -The extension requests minimal permissions: only active tab access on *.console.aws.amazon.com
  • -Source code is inspectable in any browser's extension viewer

Questions

Does the extension work with all AWS regions?

Yes. The extension reads log events from the CloudWatch console regardless of which region you're viewing. It works with all standard and GovCloud regions.

Do I need a smplogs account to use the extension?

The extension works with the free tier (3 analyses per day, no account required). Sign in for unlimited analyses on Pro or Team plans.

How many log events can the extension capture?

The extension captures whatever is loaded in the CloudWatch console view. For Log Events, this is typically up to 10,000 events. For larger datasets, export to JSON using the CLI and upload directly to smplogs.

Can I use the extension with CloudWatch Logs Insights?

Yes. The extension works with both the Log Events view and Logs Insights query results. Run your Insights query, wait for results, then click the smplogs button.

Get started in 30 seconds

Install the extension, open any CloudWatch log group, and click analyze. Your first analysis is free - no account needed.

Install for Chrome

Also available for Firefox, Edge, and Brave