Check a domain

Make a chart from your data. Put it anywhere.

Paste CSV or JSON, watch the chart draw, and download it as SVG or PNG, sized for email, Slack, slides or a README. Free, and it all happens in your browser.

Make a chart Hosted links (early access)

Your data

Paste from a spreadsheet, a CSV file or an API response. The first row (or the keys) name the columns.

12 rows, 3 columns. Comma-separated, first row is the header.

Try a sample:
Reading options

Your data stays in your browser. Nothing you paste is uploaded. Share links carry the data after the #, which browsers never send to a server.

Chart

800 × 400 px

Weekly signupsLine chart: New accounts, and accounts that finished setup (sample data). 12 categories, from Jul 6 to Sep 21. Signups: lowest 182 (Jul 6), highest 398 (Sep 21). Activated: lowest 96 (Jul 6), highest 241 (Sep 21). Values: Jul 6: Signups 182, Activated 96; Jul 13: Signups 205, Activated 112; Jul 20: Signups 198, Activated 104; Jul 27: Signups 240, Activated 131; Aug 3: Signups 262, Activated 150; Aug 10: Signups 251, Activated 139; Aug 17: Signups 298, Activated 171; Aug 24: Signups 315, Activated 186; Aug 31: Signups 302, Activated 179; Sep 7: Signups 344, Activated 205; Sep 14: Signups 371, Activated 226; Sep 21: Signups 398, Activated 241.Weekly signupsNew accounts, and accounts that finished setup (sample data)SignupsActivated0100200300400Jul 6Jul 13Jul 20Jul 27Aug 3Aug 10Aug 17Aug 24Aug 31Sep 7Sep 14Sep 21
Size

Export

Settings

Columns
Series to chart
Titles
Numbers
Style

Examples

Every chart below was drawn by the same renderer as the builder, when this page was built. Open one in the builder to change it.

Weekly signupsLine chart: Sample data. 12 categories, from Jul 6 to Sep 21. Signups: lowest 182 (Jul 6), highest 398 (Sep 21). Activated: lowest 96 (Jul 6), highest 241 (Sep 21). Values: Jul 6: Signups 182, Activated 96; Jul 13: Signups 205, Activated 112; Jul 20: Signups 198, Activated 104; Jul 27: Signups 240, Activated 131; Aug 3: Signups 262, Activated 150; Aug 10: Signups 251, Activated 139; Aug 17: Signups 298, Activated 171; Aug 24: Signups 315, Activated 186; Aug 31: Signups 302, Activated 179; Sep 7: Signups 344, Activated 205; Sep 14: Signups 371, Activated 226; Sep 21: Signups 398, Activated 241.Weekly signupsSample dataSignupsActivated050100150200250300350400398241Jul 6Jul 13Jul 20Jul 27Aug 3Aug 10Aug 17Aug 24Aug 31Sep 7Sep 14Sep 21
Line, Ivory theme Open in the builder
Revenue by regionStacked bar chart: Quarterly, sample data. 4 categories, from Q1 2026 to Q4 2026. North America: lowest $412K (Q1 2026), highest $563K (Q4 2026). Europe: lowest $298K (Q1 2026), highest $382K (Q4 2026). Asia Pacific: lowest $151K (Q1 2026), highest $270K (Q4 2026). Values: Q1 2026: North America $412K, Europe $298K, Asia Pacific $151K; Q2 2026: North America $448K, Europe $321K, Asia Pacific $187K; Q3 2026: North America $501K, Europe $339K, Asia Pacific $226K; Q4 2026: North America $563K, Europe $382K, Asia Pacific $270K.Revenue by regionQuarterly, sample dataNorth AmericaEuropeAsia Pacific$0$200K$400K$600K$800K$1M$1.2M$1.4M$861K$956K$1.1M$1.2MQ1 2026Q2 2026Q3 2026Q4 2026
Stacked bar, Paper theme Open in the builder
Where visitors came fromDonut chart: Sessions in September, sample data. Sessions, total 93.8K. Search 43.9% (41.2K); Direct 25.4% (23.8K); Referral 12.9% (12.1K); Social 9% (8.4K); Email 5.4% (5.1K); Other 3.4% (3.2K).Where visitors came fromSessions in September, sample dataSearch44%Direct25%Referral13%Social9%Email5%Other3%93.8KTotal
Donut, Carbon theme Open in the builder
Requests by endpointHorizontal bar chart: Last 24 hours, sample data. 5 categories, from /api/checkout to /api/cart. Requests: lowest 9.1K (/api/cart), highest 48.2K (/api/checkout). Values: /api/checkout 48.2K; /api/search 39.1K; /api/users/:id 21K; /api/health 12.8K; /api/cart 9.1K.Requests by endpointLast 24 hours, sample data010K20K30K40K50K48.2K39.1K21K12.8K9.1K/api/checkout/api/search/api/users/:id/api/health/api/cart
Horizontal bar, Plain theme Open in the builder
Monthly uptimeLine chart: Sample data. 6 categories, from Apr to Sep. API: lowest 99.79% (Jul), highest 99.98% (Sep). Dashboard: lowest 99.89% (Jun), highest 99.99% (Aug). Webhooks: lowest 99.82% (Apr), highest 99.94% (Sep). Values: Apr: API 99.91%, Dashboard 99.96%, Webhooks 99.82%; May: API 99.87%, Dashboard 99.94%, Webhooks 99.9%; Jun: API 99.95%, Dashboard 99.89%, Webhooks 99.86%; Jul: API 99.79%, Dashboard 99.97%, Webhooks 99.93%; Aug: API 99.93%, Dashboard 99.99%, Webhooks 99.88%; Sep: API 99.98%, Dashboard 99.95%, Webhooks 99.94%.Monthly uptimeSample dataAPIDashboardWebhooks99.75%99.80%99.85%99.90%99.95%100.00%AprMayJunJulAugSep
Line with points, High contrast theme Open in the builder
Response time by payload sizeScatter chart. 20 points. x is Payload (KB), y is Response time (ms). GET: 10 points, x from 12 to 420, y from 45 to 320. Points: (12, 45); (40, 60); (55, 58); (80, 90); (120, 110); (150, 130); (210, 170); (260, 210); (300, 240); (420, 320). POST: 10 points, x from 12 to 420, y from 70 to 400. Points: (12, 70); (40, 85); (55, 95); (80, 120); (120, 150); (150, 160); (210, 220); (260, 260); (300, 310); (420, 400).Response time by payload sizeGETPOST0501001502002503003504000100200300400500Response time (ms)Payload (KB)
Scatter, Ivory theme with Stamp blue colors Open in the builder
Early access

Get a hosted link

Some places can’t run a chart script or take a file upload: email, Slack messages, PDFs, pull request descriptions. A hosted link is a plain image URL that draws your chart when it’s opened.

What it will do:

  • An image URL per chart. Put it in an <img> tag or a Markdown image and the chart shows up, SVG or PNG.
  • Signed. Nobody can change the chart by editing the link.
  • Cached close to readers, so a newsletter sent to thousands loads quickly.
  • The same renderer as this builder, so the link and the file you download look the same.

Not built yet: we’re checking that enough people want it first. Leave your email and we’ll tell you when it opens. Nothing else.

You confirm your address first. Then one email when hosted links open.

What a hosted link could look like (format not final) 
![Weekly signups](https://boringutils.com/c/…/weekly-signups.png)

<img src="https://boringutils.com/c/…/weekly-signups.png"
     width="600" height="300" alt="Weekly signups, July to September">

What it doesn’t do

Knowing the limits up front saves you an afternoon.

One chart at a time

Chart Link makes single charts, not dashboards or reports.

Up to 8 series, 5,000 rows

Beyond 8 series, colors stop being easy to tell apart. Beyond a few thousand points, summarize first.

One value axis

No second y-axis, on purpose: two scales on one chart suggest links between numbers that may not exist. Make two charts instead.

Static files

Exports are images: no tooltips or zooming. The SVG does include a text description of the data for screen readers.

Dates in ISO format

Only dates like 2026-07-06 are placed on a time axis. Other date formats are kept as text labels.

Fonts in SVG files

An SVG uses the fonts of the computer that opens it, unless you outline the text when exporting. PNGs always look as previewed.

Hosted links

Not built yet. They are in early access to see if enough people want them.

Tools and guides

Tools

  • CSV to chart

    From a CSV file or spreadsheet cells, with European formats handled.

  • JSON to chart

    From an API response, a script or a Chart.js config.

  • Chart to PNG

    Sizes and formats for email, Slack, slides and READMEs.

Guides

Questions

Short answers to the usual ones.

Anything else: hello@boringutils.com

What is Chart Link?

A chart builder for the charts that go into other things: emails, Slack messages, slides, READMEs and reports. Paste data, pick a chart, download an SVG or a PNG. It is made by Boring Utils, a small studio of utilities for people who build and run things online.

Is it free?

The builder is free, with no account. Hosted chart links are in early access, and their pricing isn’t decided yet.

Where is my data stored?

Nowhere but your browser. Charts are drawn on your device, and nothing you paste is uploaded.

To keep your work, the builder writes it into the page address after the #. Browsers never send that part to servers, so a link you copy carries the chart to whoever opens it, and to no one else.

Can I use the charts commercially?

Yes. The SVG and PNG files are yours to use anywhere, without credit.

Which charts can it make?

Bar (vertical, horizontal, grouped and stacked), line, area (overlapping or stacked), pie, donut and scatter. Each comes in five themes: Ivory, Paper, Carbon, High contrast and Plain.

Are the charts accessible?

Each SVG carries a title and a description of the data (ranges, highs and lows, and the values for smaller charts) for screen readers. Colors are checked for color blindness, the High contrast theme adds line patterns and markers, and every color sits on a 3:1 or better contrast with its background.

Is there an API?

Not yet. Hosted links are the first step: image URLs for charts. The renderer behind this page is built so it can run on a server too. Sign up for early access to hear when it opens.