Every commit,
a ring of growth.

dendrobundle reads the webpack-stats and source-map-explorer output your CI already emits, then records what changed, by how much, and since which commit — like rings in a trunk. No agents, no client-side instrumentation, just the build stats you already generate.

Get started See a live snapshot

free to start · no card · reads the stats your build already emits

me@workstation:~/my-app$ npm run build && \

curl -sS https://dendrobundle.com/api/push \

-H"Authorization: Bearer $BUNDLE_TOKEN" \

-H"Content-Type: application/json" \

-d @dist/webpack-stats.json

→ parsing webpack-stats.json (4.2 MB) ............... ok 1.1s

→ 7 assets, 18 chunks, 142 modules .............. ok

→ writing snapshot a1b2c3d ........................... ok 84ms

✓ snapshot pushed https://dendrobundle.com/p/my-app/s/a1b2c3d

total 2.41 MB▲ +18 KB over budget by 12 KB gzip 782.0 KB▲ +4 KB largest vendor.js 1.10 MB +340 KB vs main smallest icon.svg 1.2 KB

me@workstation:~/my-app$

Parsers shipped

webpack-stats
esbuild-metafile
source-map-explorer
rollup-stats

A 2.4 MB bundle costs 4.1 seconds
on a 3G phone. Every visitor. Every visit.

Speed is the metric your users actually feel — and bundle size is the biggest lever you control over it. dendrobundle keeps that lever in view on every build: one number, a ring that should tighten over time, and a check that fails the PR when it grows.

example bundle: 2.41 MB
gzip on wire: 780 KB
parse + execute · M2: 320 ms
parse + execute · low-end Android: 2.8 s
TTI · 3G + low-end Android: 4.1 s
delta from a 200 KB target: +580 KB · 3.7×

One curl per build.
POST your build's stats JSON to /api/push. Token-scoped, idempotent, branch and commit tagged automatically from git refs in CI.
See what grew.
Compare any two snapshots — branches, deploys, releases. The table tells you which asset, which chunk, which byte count.
Fail the build.
Set per-project thresholds. PRs over budget get a red status check and the exact assets responsible.

Performance isn't a nice-to-have. The numbers say so.

mobile abandonment: 53%; of visits abandon if load exceeds 3 seconds on mobile; Google / SOASTA
conversion drop: 7%; conversion lost for every 1-second delay in page load; Aberdeen Group
latency tax: 1%; revenue lost per 100 ms of added latency at Amazon scale; Amazon internal (2006)
annual revenue lost: $2.6B; in e-commerce revenue lost globally to slow load times each year; Akamai / Forrester

Every second kills conversions.

The numbers are not subtle. Slow pages lose users before they ever reach your product — and bundle size is the biggest lever you control over it.

123%

increase in mobile bounce probability as load time grows from 1s to 10s.

Source: Google, 2017

Every millisecond
costs you.

A 1-second delay reduces conversions by 7%.: Akamai
53% of mobile users abandon sites that take over 3 seconds to load.: Google
Pages that load in 1s convert 3× better than pages that take 5s.: Portent

dendrobundle.com/projects3 projects

Slow pages lose
search rankings too.

Google's Core Web Vitals include LCP, FID, and CLS — and bundle size is the biggest lever you control over LCP. Every kilobyte you ship delays paint.

Google uses page speed as a ranking signal since 2010, Core Web Vitals since 2021.: Google Search Central
Top-ranking pages load 2.5× faster than pages on page 2.: Backlinko
Sites with good Core Web Vitals see 24% fewer page abandonments.: Google CrUX data

before dendrobundle

LCP4.8 s

needs improvement

bundle2.4 MB

untracked

FID320 ms

poor

after dendrobundle

LCP1.9 s

good

bundle890 KB

budgeted

FID48 ms

good

// sites with good Core Web Vitals see 24% fewer page abandonments — Google CrUX data

Up and running in 60 seconds.

free to start · no card required
any CI pipeline works
webpack · esbuild · source-map-explorer
rollup · vite (via rollup-plugin-visualizer)

Want to see it first? Drop a stats file into the free bundle analyzer → — no signup, nothing uploaded.

# create a free account and a project
# dendrobundle.com/register — no card required

# create a push token
# Dashboard, then Project Settings, API Tokens, New token
bt_live_8f2a…c7e1   # save this; shown once

# wire CI (github actions, drone, gitlab, jenkins — any)
- run: npm run build
- run: |
    curl -sS https://dendrobundle.com/api/push       -H "Authorization: Bearer {{ secrets.BUNDLE_TOKEN }}"       -d @dist/webpack-stats.json

total 2 · price: USD/month · billed monthly · cancel anytime

perm	tier	size	$/mo	terms	action
-rw-r--r--	community	3 projects	0	free forever, 10 snapshots per project, no card	get started
-rw-rw-r--	developer	10 projects	20	+ unlimited history, data export, email support	upgrade

// no per-bundle metering. no "starting at". no sales calls unless you ask.

Every commit, a ring of growth.

A 2.4 MB bundle costs 4.1 seconds on a 3G phone. Every visitor. Every visit.

Features

One curl per build.

See what grew.

Fail the build.