Changelog

Added month_by_date to use_calendar (thanks to @tomaszkubacki)
Added target_offset to use_draggable (thanks to @theredfish)
UseRwSignal can now be converted from anything that implements the respective reactive Leptos traits. This includes Signals, Memos, Store fields, ... meaning the sync_signal now works with everything.
ElementMaybeSignal can be converted from Signal<SendWrapper<web_sys::Element>> improving interop with other crates.

Fixes 🍕

use_cookie with SSR has been fixed. This fixes the use_color_mode SSR issues as well.
use_event_source with infinity reconnect limit has been fixed.
Conversion of ElementMaybeSignal from &str has been fixed.

@benwis

[0.16.0-beta2] - 2025-03-20

Breaking Change 🛠

Updated dependency Leptos to version 0.8.0 (thanks to @DerKnerd, @jaystile)

New Feature 🚀

Added target_offset to use_draggable options for more flexible positioning (thanks to @theredfish)

Special thanks to our sponsors

@benwis
@spencewenski

[0.16.0-beta] - 2025-03-20

Breaking Change 🛠

Updated dependency Leptos to version 0.8.0-beta (thanks to @ifiokjr)

New Feature 🚀

Added month_by_date to use_calendar (thanks to @tomaszkubacki)

Special thanks to our sponsors

@benwis
@spencewenski

[0.16.0-alpha] - 2025-03-17

Breaking Changes 🛠

Removed the feature spin and it's backend integration dependency leptos-spin (thanks to @ifiokjr)
Updated dependency Leptos to version 0.8.0-alpha (thanks to @ifiokjr)
Updated dependency getrandom to version 0.3
Updated dependency rand to version 0.9

@spencewenski

[0.15.8] - 2025-06-12

New Features 🚀

Added month_by_date to use_calendar (thanks to @tomaszkubacki)
Added target_offset to use_draggable (thanks to @theredfish)
UseRwSignal can now be converted from anything that implements the respective reactive Leptos traits. This includes Signals, Memos, Store fields, ... meaning the sync_signal now works with everything.
ElementMaybeSignal can be converted from Signal<SendWrapper<web_sys::Element>> improving interop with other crates.

Fixes 🍕

use_cookie with SSR has been fixed. This fixes the use_color_mode SSR issues as well.
use_event_source with infinity reconnect limit has been fixed.
Conversion of ElementMaybeSignal from &str has been fixed.

@benwis

[0.15.7] - 2025-03-17

Change

Updated codee version to 0.3.0 in line with the latest 0.7 Leptos versions

@spencewenski

[0.15.6] - 2025-02-08

Fix 🍕

Fixed use_storage overwriting stored values with SSR (thanks to @BakerNet).

@spencewenski

[0.15.5] - 2025-01-15

Fix 🍕

sync_signal with immediate = true now syncs the signals on the server once initially. This fixes use_color_mode with cookies enabled to give wrong results during SSR.

@spencewenski

[0.15.4] - 2025-01-15

Fixes 🍕

downgraded codee to 0.2.0 to be compatible with Leptos 0.7
fixed use_mutation_observer (thanks to @bpwarner)

Changes 🔥

improxed DX: implemented Clone + Copy for UseDropZoneReturn (thanks to @mahmoud-eltahawy)

@spencewenski

[0.15.3] - 2025-01-08 (yanked)

New Function 🚀

use_calendar

Fix 🍕

added Debug to Size (thanks to @Ahlman)

@spencewenski

[0.15.2] - 2025-01-03

Fixes 🍕

Fixed path of use_color_mode cookie
ElementMaybeSignal and ElementsMaybeSignal are now properly Clone and Copy

@spencewenski

[0.15.1] - 2024-12-31

Fixes 🍕

Fixed use_element_hover not properly cancelling it's timeout (thanks to @jcold).
Fixed use_storage not writing default values.
Fixed unidirectional sync_signal not syncing properly.

Special thanks to our sponsors

@spencewenski
LeftClick

[0.15.0] - 2024-12-17

New Functions 🚀

signal_throttled and signal_debounced now have ..._local variants (thanks to @bicarlsen)

Breaking Changes 🛠

use_storage now accepts a Signal as it's key parameter (thanks to LeftClick)
use_websocket now supports sending heartbeats (thanks to LeftClick)

Fix 🍕

Fixed use_storage to actually remove the key when remove is called (thanks to @flaviopezzini)

Special thanks to our sponsors

@spencewenski
LeftClick

[0.14.0] - 2024-12-01

Highlights since 0.13

Updated to Leptos 0.7
Refactored ElementMaybeSignal and ElementsMaybeSignal to have a simpler implementation. For the vast majority of cases this should continue to work as before.
Almost everything returned from functions is now Send + Sync.

Changes since 0.14.0-rc5

Updated Leptos to use stable 0.7 version
Updated wasm-bindgen to 0.2.96
Updated web-sys 0.3.73

Special thanks to our sponsor:

@spencewenski

[0.14.0-rc5] - 2024-11-27

fixed error messages for get_header
added Send + Sync to storage return closure

Special thanks to our sponsor:

@spencewenski

[0.14.0-rc4] - 2024-11-26

Updated to Leptos 0.7.0-rc2
Fixed WASM on the serverside (thanks to @GuillaumeDelorme)
Fixed use_storage.
Made all returned closures Send + Sync.

Special thanks to our sponsor:

@spencewenski

[0.14.0-rc3] - 2024-11-14

Fixed potential SSR panic in use_locale(s) (thanks to @veigaribo)
Make use_locale prioritize user preferred locales over app preferred ones

[0.14.0-rc2] - 2024-11-10

Updated to Leptos 0.7.0-rc1
Updated to web-sys 0.3.72 and unpinned version (thanks to @sabify)
Added dependabot (thanks to @sabify)
Reverted use_user_media to have video enabled by default
Fixed exponential increase on websocket reconnects

[0.14.0-rc1] - 2024-11-06

Fixed MediaTrackConstraints dependency (thanks to @mollymorphous)
Fixed warnings and tests (thanks to @SleeplessOne1917 and @jheuel)
Unpinned the wasm-bindgen version (thanks to @jheuel)

[0.14.0-rc0] - 2024-11-03

Latest changes up to version 0.13.7 ported
Updated to Leptos 0.7.0-rc0

[0.14.0-gamma2] - 2024-10-16

Updated to Leptos 0.7.0-gamma3 by using Signal instead of MaybeSignal

[0.14.0-gamma1] - 2024-10-10

Adapted to the latest changes in Leptos (thanks to @BakerNet and @nikessel)
Fixed all the examples
use_active_element ported
use_drop_zone now returns Signal<Vec<SendSignal<web_sys::File>>> instead of Signal<Vec<web_sys::File>, LocalStorage> to make it easier to use with <For>

[0.14.0-beta4] - 2024-09-15

Latest changes from version 0.13.4 and 0.13.5 ported

[0.14.0-beta3] - 2024-09-02

Breaking Changes 🛠

Refactored ElementMaybeSignal and ElementsMaybeSignal to have a simpler implementation. For the vast majority of cases this should continue to work as before.

[0.14.0-beta2] - 2024-09-09

Change 🔥

Latest Leptos 0.7 beta changed the trigger trait method (thanks to @BakerNet)
Latest changes from version 0.13.3 ported

[0.14.0-beta1] - 2024-09-02

Ported everything to Leptos 0.7 Some example don't run yet.

[0.13.12] - 2025-01-03

Fixed path of use_color_mode cookie

Thanks to our generous sponsor:

@spencewenski

[0.13.11] - 2024-11-22

Updated web-sys version to 0.3.72

Thanks to our generous sponsor:

@spencewenski

[0.13.10] - 2024-11-14

Fixed potential SSR crash in use_locale(s) (thanks to @veigaribo)

[0.13.9] - 2024-11-10

Reverted use_user_media to have video enabled by default
Fixed exponential increase on websocket reconnects

[0.13.8] - 2024-11-06

Backported fixes from 0.14.0-rc1

[0.13.7] - 2024-10-20

Added video and audio options to use_user_media (thanks to @sauloco).
Fixed cookies in SSR (thanks to @jim-taylor-business).

[0.13.6] - 2024-10-20

Updated leptos-spin version to 0.2 (thanks to @tqq1994516).

[0.13.5] - 2024-09-15

New Function 🚀

use_textarea_autosize

[0.13.4] - 2024-09-05

Fix 🍕

use_websocket now returns a signal for the websocket instance so the user can actually use it. Before it always returned None.

[0.13.3] - 2024-09-02

Fix 🍕

Fixed use_color_mode with cookies enabled

[0.13.2] - 2024-09-02

Fix 🍕

Fixed web-sys unstable_apis flag for use_web_lock

[0.13.1] - 2024-09-01

New Functions 🚀

use_web_lock
use_window_size

Change 🔥

UseWebsocket::protocols now supports a signal. It is read right before open is called. (thanks to @zakstucke)

[0.13.0] - 2024-08-28

New Functions 🚀

use_toggle
use_prefers_reduced_motion (thanks to @hcandelaria)

Breaking Changes 🛠

use_websocket now supports different types for sending and receiving messages
SyncSignalOptions now can take now either transformations or assignment functions but not both.
updated to codee version 0.2.0

Fixes 🍕

use_websocket fixed error with cleanup and reconnect (thanks to @BakerNet).

New Features 🚀

There is now a feature for almost every function to get better compile and rust-analyzer times.
use_web_notification now supports the vibrate option (thanks to @hcandelaria).
UseDocument now supports a whole bunch of methods more from document (thanks to @luckynumberke7in).

[0.12.0] - 2024-08-14

Make sure you also update cargo-leptos to the latest version if you use that.

Breaking Changes 🛠

Updated to web_sys 0.3.70 which unfortunately is breaking some things.
use_clipboard doesn't need the unstable flags anymore.
use_locale now uses unic_langid::LanguageIdentifier and proper locale matching (thanks to @mondeja).
Removed UseMouseEventExtractorDefault and reworked UseMouseCoordType (thanks to @carloskiki)
use_preferred_dark and use_color_mode now try to read the Sec-CH-Prefers-Color-Scheme header in SSR. This brings the necessity to enable an additional feature for them (axum / actix / spin).

Fixes 🍕

Fixed the codec chapter in the book to refer to crate codee.

[0.11.4] - 2024-08-12

New Features 🚀

use_web_notification now supports the options renotify, silent and image (thanks to @hcandelaria).
sync_signal no supports the options assign_ltr and assign_rtl.

[0.11.3] - 2024-07-31

Fix 🍕

Made use_timeout_fn SSR-safe

[0.11.2] - 2024-07-30

Change 🔥

use_locale has now a supported locale list.

(yanked) [0.11.1] - 2024-07-28

New Functions 🚀

use_locale (thanks to @BrandonDyer64)
use_locales (thanks to @BrandonDyer64)
header – Standard implementations for reading a header on the server.

[0.11.0] - 2024-07-27

New Functions 🚀

use_user_media

New Features 🚀

Codecs:
- All codecs now live in their own crate codee
- There are now binary codecs in addition to string codecs.
  - FromToBytesCodec
  - WebpackSerdeCodec
  - BincodeSerdeCodec
  - ProstCodec (see also the section "Breaking Changes 🛠" below)
- Every binary codec can be used as a string codec with the Base64 wrapper which encodes the binary data as a base64 string.
  - This required feature base64
  - It can be wrapped for example like this: Base64<WebpackSerdeCodec>.
- There is now an OptionCodec wrapper that allows to wrap any string codec that encodes T to encode Option<T>.
  - Use it like this: OptionCodec<FromToStringCodec<f64>>.
ElementMaybeSignal is now implemented for websys::HtmlElement (thanks to @blorbb).
UseStorageOptions now has delay_during_hydration which has to be used when you conditionally show parts of the DOM controlled by a value from storage. This leads to hydration errors which can be fixed by setting this new option to true.
cookie::SameSite is now re-exported
Changing the signal returned by use_cookie now tries and changes the headers during SSR.
New book chapter about codecs
The macro use_derive_signal! is now exported (thanks to @mscofield0).

Breaking Changes 🛠

UseStorageOptions and UseEventSourceOptions no longer accept a codec value because this is already provided as a generic parameter to the respective function calls.
Codecs have been refactored. There are now two traits that codecs implement: Encoder and Decoder. The trait StringCodec is gone. The methods are now associated methods and their params now always take references.
- JsonCodec has been renamed to JsonSerdeCodec.
- The feature to enable this codec is now called json_serde instead of just serde.
- ProstCodec now encodes as binary data. If you want to keep using it with string data you can wrap it like this: Base64<ProstCodec>.
- All of these structs, traits and features now live in their own crate called codee
- A bunch of new codecs are available. Have a look at the docs for crate codee.
use_websocket:
- UseWebsocketOptions has been renamed to UseWebSocketOptions (uppercase S) to be consistent with the return type.
- UseWebSocketOptions::reconnect_limit and UseEventSourceOptions::reconnect_limit is now ReconnectLimit instead of u64. Use ReconnectLimit::Infinite for infinite retries or ReconnectLimit::Limited(...) for limited retries.
- use_websocket now uses codecs to send typed messages over the network.
  - When calling you have give type parameters for the message type and the codec: use_websocket::<String, WebpackSerdeCodec>
  - You can use binary or string codecs.
  - The UseWebSocketReturn::send closure now takes a &T which is encoded using the codec.
  - The UseWebSocketReturn::message signal now returns an Option<T> which is decoded using the codec.
  - UseWebSocketReturn::send_bytes and UseWebSocketReturn::message_bytes are gone.
  - UseWebSocketOptions::on_message and UseWebSocketOptions::on_message_bytes have been renamed to on_message_raw and on_message_raw_bytes.
  - The new UseWebSocketOptions::on_message takes a &T.
  - UseWebSocketOptions::on_error now takes a UseWebSocketError instead of a web_sys::Event.
use_storage now always saves the default value to storage if the key doesn't exist yet.
Renamed BreakpointsSematic to BreakpointsSemantic and breakpoints_sematic to breakpoints_semantic (note the n) (thanks to @mondeja).

Fixes 🍕

Fixed auto-reconnect in use_websocket
Fixed typo in compiler error messages in use_cookie (thanks to @SleeplessOne1917).
Fixed potential signal out of scope issue with use_raf_fn

Other Changes 🔥

Better links in docs that work both in the book and in rustdoc (thanks to @mondeja).
Better CI/CD (thanks to @EstebanBorai).

[0.10.10] - 2024-05-10

Change 🔥

Added compile-time warning when you use ssr feature with wasm32. You can enable wasm_ssr to remove the warning.

[0.10.9] - 2024-04-27

Fixes 🍕

Fixed use_color_mode without cookies and make cookies sync properly with local storage
Fixed use_infinite_scroll edge case bug with disposed signals

[0.10.8] - 2024-04-19

Change 🔥

use_cookie now supports Spin out of the box (thanks to @javierEd).

[0.10.7] - 2024-04-10

New Function 🚀

sync_signal

Change 🔥

use_color_mode now supports cookies.

[0.10.6] - 2024-04-02

Fixes 🍕

Corrected docs of use_cookie's max-age unit to milliseconds (thanks to @sify21).
Fixed setting multiple cookies in the browser (thanks to @sbking).

[0.10.5] - 2024-03-12

Fix 🍕

Fixed SSR detection from an url query parameter for use_color_mode (thanks to @mondeja).

[0.10.4] - 2024-03-05

New Functions 🚀

use_event_source

Changes 🔥

Wrapped callbacks in a non-reactive zone to remove potential warnings.
Updated SSR chapter in the book to make it more clear and beginner-friendly (thanks to @flupke).

[0.10.3] - 2024-02-23

New Functions 🚀

use_or
use_and
use_not

Fix 🍕

Removed signal warnings from use_websocket's send... methods.

Changes 🔥

use_color_mode now supports detection from an url query parameter. (thanks to @mondeja)

[0.10.2] - 2024-02-09

New Functions 🚀

use_permission
use_clipboard
use_timeout_fn

[0.10.1] - 2024-01-31

Fix 🍕

Fixed docs.rs build

[0.10.0] - 2024-01-31

New Functions 🚀

use_broadcast_channel
use_cookie (thanks to @rakshith-ravi)
use_mouse_in_element
use_device_orientation (thanks to @mondeja)
use_device_pixel_ratio (thanks to @mondeja)
use_element_bounding

Breaking Changes 🛠

The leptos version is now 0.6
The trait Codec has been renamed to StringCodec and has been moved to util::StringCodec.
- The struct StringCodec has been renamed to FromToStringCodec and has been moved to util::FromToStringCodec.
- The structs JsonCodec and ProstCodec have been moved to util as well.
The function use_storage now requires type parameters for the stored type and the codec like all the other ...storage... functions.

Fixes 🍕

Fixed use_geolocation SSR compile issue
Fixed use_intl_number_format maximum fraction digits option

Changes 🔥

The UseMouseReturn signals x, y, and source_type are now of type Signal<f64> instead of ReadSignal<f64>.
You can now convert leptos::html::HtmlElement<T> into Element(s)MaybeSignal. This should make functions a lot easier to use in directives.
There's now a chapter in the book especially for Element(s)MaybeSignal.
Throttled or debounced callbacks (in watch__ or __fn) no longer are called after the containing scope was cleaned up.
The document returned from use_document now supports the methods query_selector and query_selector_all.

[0.9.0] - 2023-12-06

New Functions 🚀

use_display_media (thanks to @seanaye)

Breaking Changes 🛠

(@feral-dot-io) The use use_<type>_storage functions have been rewritten to use Codecs instead of always requiring serde.
- This also removes the feature storage
- By default the StringCodec is used which relies on types implementing FromString + ToString
- If you want to use JsonCodec you have to enable the feature serde
- If you want to use ProstCodec (new!) you have to enable the feature prost.
(@feral-dot-io) The Rust flag --cfg=web_sys_unstable_apis is not needed anymore since relevant web_sys APIs are now stable. This affects in particular
- use_element_size
- use_resize_observer

Fixes 🍕

use_raf_fn and use_timestamp no longer spam warnings because of getting signals outside of reactive contexts.
use_infinite_scroll no longer calls the callback twice for the same event
use_scroll now uses try_get_untracked in the debounced callback to avoid panics if the context has been destroyed while the callback was waiting to be called.
use_idle works properly now (no more idles too early).
use_web_notification doesn't panic on the server anymore.

[0.8.2] - 2023-11-09

Fixes 🍕

Fixed SSR for
- use_timestamp
- use_raf_fn
- use_idle

[0.8.1] - 2023-10-28

Fixes 🍕

Using strings for ElementMaybeSignal and ElementsMaybeSignal is now SSR safe.
- This fixes specifically use_color_mode to work on the server.

[0.8.0] - 2023-10-24

New Functions 🚀

use_web_notification (thanks to @centershocks44)
use_infinite_scroll
use_service_worker (thanks to @lpotthast)

Breaking Changes 🛠

use_scroll returns impl Fn(T) + Clone instead of Box<dyn Fn(T)>.

Other Changes 🔥

UseScrollReturn is now documented

[0.7.2] - 2023-10-21

Fixes 🍕

Some functions still used window() which could lead to panics in SSR. This is now fixed. Specifically for use_draggable.

[0.7.1] - 2023-10-02

New Function 🚀

use_sorted

[0.7.0] - 2023-09-30

New Functions 🚀

use_timestamp
use_idle
use_document
use_window
use_geolocation
signal_debounced
signal_throttled

Breaking Changes 🛠

Leptos version is now 0.5
No cx: Scope params are supported/needed anymore because of the changes in Leptos. Please check the release notes of Leptos 0.5 for how to upgrade.
watch is now deprecated in favor of leptos::watch and will be removed in a future release. watch_with_options will continue to exist.
use_event_listener_with_options now takes a UseEventListenerOptions instead of a web_sys::AddEventListenerOptions.
use_mutation_observer_with_options now takes a UseMutationObserverOptions instead of a web_sys::MutationObserverInit.
use_websocket:
- takes now a &str instead of a String as its url parameter.
- same for the returned send method.
- The ready_state return type is now renamed to ConnectionReadyState instead of UseWebSocketReadyState.
- The returned signals ready_state, message, message_bytes have now the type Signal<...> instead of ReadSignal<...> to make them more consistent with other functions.
- The options reconnect_limit and reconnect_interval now take a u64 instead of Option<u64> to improve DX.
- The option manual has been renamed to immediate to make it more consistent with other functions. To port please note that immediate is the inverse of manual (immediate = !manual).
- Added documentation how pass it ergonomically as context.
use_color_mode:
- The optional on_changed handler parameters have changed slightly. Please refer to the docs for more details.
Throttled or debounced functions cannot be FnOnce anymore.
All traits ClonableFn... have been removed.

Other Changes 🔥

use_websocket can use relative urls now
Callbacks in options don't require to be cloneable anymore
Callback in use_raf_fn doesn't require to be cloneable anymore
All (!) functions can now be safely called on the server. Specifically this includes the following that before panicked on the server:
- use_scroll
- use_event_listener
- use_element_hover
- on_click_outside
- use_drop_zone
- use_element_size
- use_element_visibility
- use_resize_observer
- use_intersection_observer
- use_mutation_observer

Fixes 🍕

use_element_visibility didn't work in some cases on Chrome properly. This has been fixed.

[0.6.3] - 2023-08-12

Fixes 🍕

use_websocket panicked after unmount

[0.6.2] - 2023-08-03

Fixes 🍕

use_event_listener_with_options removes the handlers now correctly.

[0.6.1] - 2023-08-03

Fixes 🍕

use_storage now uses .get_untracked() to avoid warnings.

[0.6.0] - 2023-07-17

New Functions 🚀

use_draggable
use_to_string
is_err
is_ok
is_none
is_some
use_raf_fn

Breaking Changes 🛠

The following functions now accept a MaybeRwSignal as their initial/default value which means you can use a synchronized RwSignal in those places.
- use_color_mode
- use_cycle_list
- use_favicon
- use_storage
- use_local_storage
- use_session_storage
Instead of returning ReadSignal, the following functions now return Signal.
- use_color_mode
- use_favicon
- use_storage
- use_local_storage
- use_session_storage

Fixes 🍕

use_drop_zone now uses .get_untracked() in event handlers

[0.5.0] - 2023-07-15

New Functions 🚀

use_drop_zone
use_websocket (thanks @sectore)
use_intl_number_format

Changes 🔥

Crate is ready for Server-Side Rendering. Enable feature ssr like you do for leptos.

[0.4.1] - 2023-07-07

New Functions 🚀

use_window_focus
use_window_scroll
use_document_visibility

[0.4.0] - 2023-07-03

Breaking Changes 🛠

Required leptos version is now 0.4
Following the changes in leptos there is no longer a stable crate feature required in order to use this library with a stable toolchain. If you want to use it with a nightly toolchain you have to enable the nightly feature only on leptos directly. No change is required for leptos-use itself.

[0.3.3] - 2023-06-24

New Functions 🚀

use_color_mode
use_cycle_list
use_active_element

Changes 🔥

You can now use this crate with the stable toolchain (thanks @lpotthast)
Set leptos dependency to default-features = false in order to enable SSR.

[0.3.2] - 2023-06-17

New Functions 🚀

use_css_var
use_element_hover

[0.3.1] - 2023-06-15

New Functions 🚀

use_interval_fn
use_interval

[0.3.0] - 2023-06-13

Breaking Changes 🛠

use_event_listener no longer returns a Box<dyn Fn()> but a impl Fn() + Clone

Changes 🔥

You can now specify a &str or Signal<String> with CSS selectors wherever a node ref is accepted
Callbacks of the following functions no longer require Clone
- use_resize_observer
- use_intersection_observer
These functions now also accept multiple target elements in addition to a single one:
- use_resize_observer
- use_intersection_observer

New Functions 🚀

whenever
use_mutation_observer
use_abs
on_click_outside

[0.2.1] - 2023-06-11

New Functions

use_intersection_observer
use_element_visibility

[0.2.0] - 2023-06-11

Breaking Changes

watch doesn't accept immediate as a direct argument anymore. This is only provided by the option variant.
watch has now variant watch_with_options which allows for debouncing and throttling.