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leeoniya
uPlot
JavaScript2019–2026
leeoniya / uPlot

uPlot

📈 A small, fast chart for time series, lines, areas, ohlc & bars

Data & Databases
Explore on GitHubRead Hacker News discussions
13Distinct people
38Mentions
0Explicit recommenders
10.6KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

📈 A small, fast chart for time series, lines, areas, ohlc & bars

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 3:30:57 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year38 dated mentions

Observed mentions: 2019-10-06 16:56:26 UTC to 2026-04-09 23:32:50 UTC.

0510152019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 7 mentions; 1 submissions, 6 comments20192020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 13 mentions; 1 submissions, 12 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 5 mentions; 0 submissions, 5 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments20222023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 2 mentions; 1 submissions, 1 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC716
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC13112
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC505
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC303
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC211
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC303
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC110
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC404

What Hacker News says

5 sources
leeoniya·Nov 6, 2021
Safari's slow release cadence (typically tied to OS version upgrades) does leave it more broken and for longer than Firefox, Chrome, Opera and other browsers that are updated more frequently and not tied to the OS. just recently i ran into incompatibilities with Safari < 14 needing a shim due to still having the old-spec MediaQueryList api: https://github.com/leeoniya/uPlot/issues/538#issuecomment-87...
In AMP Has Irreparably Damaged Publishers’ Trust in Google-Led Initiatives
leeoniya·Jun 9, 2021
> Can you now maybe talk a little bit about the React integration? do you have a specific question about it? there are some third party integrations now: https://github.com/leeoniya/uPlot#third-party-integrations in general, my stance on the topic has not changed. wrapping a fast imperative lib in a declarative framework facade has significant performance drawbacks. the main CPU & RAM cost of rendering a Grafana dashboard full of uPlot graphs is almost always React (by far). > Another question: are you considering making uPlot more accessible? this is a pretty complex challenge for data vis. i don't think this will ever be built into uPlot since the required code to make it actually good would be quite large. grafana in general will definitely need a better accessibility story, so we will have to figure something out and at minimum provid
Read the rest
e some kinds of fallback html summary tables. i imagine this will not be a trivial project. while it's easy to summarize a simple bar or pie chart with 5 series, how do you summarize 100 noisey trendlines with 2k points each? how do you summarize a histogram or temporal heatmap? it's one thing to have a human summarize some pre-determined/static chart graphic; it's completely something else to usefully auto-summarize arbitrary datasets beyond listing series names and general stats (sum, median, mean, outliers, counts) at the end of the day, the data you feed into uPlot is already there for you to create an accessibility story externally. if you'd like to write some code that can take arbitrary data as input and output something sensible, please open a PR/discussion in Grafana or uPlot. https://pauljadam.com/demos/canvas.html
In Grafana 8.0
darekkay·Jun 9, 2021
Hey @leeoniya, great to hear that you've been involved in including uPlot. Can you now maybe talk a little bit about the React integration [1]? Another question: are you considering making uPlot more accessible? Right now, at least the uPlot demo is inaccessible to screen reader users and only partially accessible to keyboard users. [1] https://github.com/leeoniya/uPlot/issues/283
In Grafana 8.0
leeoniya·Jun 8, 2021
uPlot ended up being a perfect fit for dashboards with tons of timeseries charts. who would've thought? ;) i'm very happy they hired me, maybe due to extreme lack of uPlot documentation :D the previous library Grafana was using (Flot) is also canvas based and actually still quite fast [1], but the way it was integrated put a heavy load on other dependencies, like Moment which is not fast at all. [1] https://github.com/leeoniya/uPlot#performance
In Grafana 8.0

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