Version History

For links to download each release, see the Downloads page.



Breaking changes:

  • Stop parsing the deprecated 8-digit ‘YYYYMMDD’ date format (#984) (#985) (#1023)
  • GWT “support” is no longer pertinent as we cannot recompile the binary JAR; the latter is still available from the website for now

New features:

  • Add option to colour the range selector’s veil (#856)
  • Added strokeStyle option to crosshair plugin (#955)
  • Support DocumentFragment as a result from a legendFormatter function (#958) (#959)
  • Add data index to legendFormatter data (#965)
  • Implement #RRGGBB[AA] hex colour parsing
  • Make animateBackgroundFade into an option
  • Add new “resizable” option using ResizeObserver on maindiv + CSS
  • Add offset config for legend div in follow mode (#946)


  • Fix duplicate annotation when having duplicate points (#826)
  • Make sure that canvasx and canvasy properties are initialised from the start (#896)
  • Fix issue #781 when the y range is zero (#909)
  • Synchroniser now calls highlightCallback (#935)
  • Fix drawAxes to allow one of two Y axes to be drawn (#936)
  • LEGEND: Don’t show Y if value is undefined (#853) (#947)
  • Fixed 'Cannot read property 'length' of undefined' issue (#962) (#963)
  • Two fixes in the calculations of pinch-zoom (#990)
  • Fix for double paint of grid of x-axis (#1007)
  • Fix number of days in a year (#1012)
  • Fix labelsKMB and labelsKMG2 (#571) (#994) (#1022)
  • Fix label position in onmouseover legend mode was never updated
  • Fix several cases of mispositioning/missizing by enabling elements before using offsetWidth etc.
  • Make it possible to use logscale (and sigma, wilsonInterval) per-axis (#986)

Other user-visible changes:

  • Documentation is now shipped (mostly self-contained) in the release
  • Tests that use Google JSAPI are now marked ⚠ and no other external content is loaded anywhere
  • Calculate legend positioning relative to closest data point (#1013)
  • Add missing documentation about annotations xval option (#992)
  • source mapping URLs are now correct (#1027)
  • Ship ES5 versions of extras (#952), use them in examples
  • Fix documentation/website HTML/CSS/JS bugs (#979) (#1008)
  • On the website, external links are now clearly labelled
  • The documentation and website now have browsable subdirectories by manually generated directory index files
  • Link to UNPKG as CDN as well (to keep neutral; use of CDNs in websites violates the EU-GDPR)
  • Most issues with right-to-left languages should now be fixed (#1019)
  • Document that Dygraph will misbehave if the main div has padding

Internal refactors/fixes:

  • Use link href, not link src (#904)
  • Add missing semicolon in externs (#964)
  • Large build system improvements relying in large parts on Debian and GHA
  • Full licence review as part of uploading to Debian (#1024) (#1025) (#1029); drop embedded code copies
  • Fix some JSDoc warnings
  • Update to contemporary versions of Python 3, jQuery, Babel, etc.
  • Add copies of design documents that were previously only available on Google Docs or part of GitHub issues to offline documentation
  • Nuke useless semicola after function declaration bodies
  • Fix closure type annotation in hairlines.js
  • Remove already commented-out obsolete, or redundant, code


New features:
  • Double click event can be captured and cancelled by plugins
  • setAnnotations's second parameter is now an optional boolean
  • Add `pixelRatio` option, which may allow improved performance on smaller screens by controlling the canvas' pixel ratio
  • X-axis label and tick logic can now operate at millisecond-level granularity
Bug fixes:
  • Repair a bug in "Custom interaction modals" demo
Internal refactors/fixes:
  • Fix various spelling mistakes
  • Fix a couple of type signatures in dygraph-externs.js


Breaking changes:
  • JS files were renamed to dygraph.js and dygraph.min.js.
  • There's now a dygraph.css file that you must include.
  • Dropped support for OldIE and other non-standard browsers. dygraphs works in IE11. I'm not sure about IE9 and IE10.
  • Double-click to unzoom zooms all the way out (and ignores valueRange).
  • Dropped old-style per-axis/per-series options.
New features:
  • Add a legendFormatter option
  • `this` is the Dygraph object in all callbacks
  • pass through (row, col) to valueFormatter
  • Option to not sync range in extras/synchronizer.js
  • Additional options for styling the range selector
  • getRowForX method
  • setVisibility can set the visibility of multiple series at once.
  • crosshair plugin extra
  • rebase/straw broom plugin
  • highlightSeriesBackgroundColor option
  • yAxisExtremes() method.
  • Passing strings in native format now throws. (Previously it kinda sorta worked.)
Bug fixes:
  • Selections are always cleared with animations
  • synchronizer calls previously-set callbacks
  • synchronizer only syncs when graphs are ready
  • Reset on synchronized graphs failed
  • fix to improve synchronizer performance
  • binary search bug fix in synchronizer
  • Fix range selection when chart is located inside fullscreen element
  • fillAlpha can be set per-series when fillGraph is set.
  • xRangePad was ignored on unzoom
  • Allow selected points where canvas-y coordinate is 0
  • Using valueRange with Logscale and yRangePad has unexpected results
  • With "drawGapEdgePoints", unwanted point often drawn at beginning of chart
Other user-visible changes:
  • “legend: follow” positioning changes
Internal refactors:
  • Code moved into a “src/“ directory
  • Tests use Mocha instead of jstd
  • dygraphs is split into ES6 modules and uses some ES6 features (e.g. arrows and destructuring).
  • dygraphs is built using babel & browserify
  • Code coverage is tracked continuously
  • Bundle size is now tracked continuously


  • Set this to the dygraph in all callbacks.
  • Minor bug fixes.


Highlights include:
  • dygraphs is now "retina" compatible.
  • Dramatically improved performance for filled charts (i.e. fillGraph)
  • More sensible date ticks: "Jan 08"→"Jan 2008", "29Jan"→"29 Jan"
  • Using a non-existent option now throws (w/ dygraph-combined-dev.js)
  • x-axis log scales
  • The labelsUTC option forces UTC formatting for all labels.
  • The new DataHandler system allows for more flexibility in data loading.
  • "this" is set to the dygraph in all callbacks.
  • dygraphs has shrunk, because we moved some stuff into "extras" (133kb→122kb)
This will be the last major release to support browsers without a native <canvas> implementation. See blog post for more details.


Minor bug fixes and updates to web site.


Initial Release. See blog post.