JOSM Validator Rules

The JOSM validator (Tag checker) can be customized with different rules based on MapCSS.

Choose Rules

There are base rules (e.g. Geometry​ or Highways​) that cover dedicated features each. They can be combined with add-on rules that cover more special topics:

short description		author	description	version
	addr:full warning	CjMalone	More details	1.1_2024-02-09
	ATMs in Slovakia	Jose Riha	Rules implementing operator and ref tag checks for ATMs in Slovak Republic. ​More details	9_2022-03-27
	​Brazilian-specific rules	OpenStreetMap Brasil	Community rules for the most common errors and problems found in Brazil. Messages are in Portuguese only. ​More details	2019-07-14
	Charge validation rules	Famlam	Rules to validate the charge and charge:conditional keys. More details	1.3_2024-09-02
	Check Date	CjMalone	More details	1.1_2023-05-20
	​Colombia specific rules	Andres Gomez (AngocA) - Maptime Bogota	Validation rules for the most common issues found in Colombia. Messages are in Spanish, with suggestion and fixes. This is based on the Colombian Guide for Mapping which can be found in the OSM Wiki. ​More details	2021-11-29
	Country Code Check	CjMalone	More details	1.1_2023-04-09
	Czech Republic Address System	Jose Riha	Rules implementing checks for address tags specified by Czech Republic Address System. Only used in CZ and SK. More details	2.17_2020-10-05
	Duplicate Attributes	CjMalone	More details	1.2_2024-09-18
	​Dutch specific rules	Famlam	Rules for The Netherlands only (European part). ​More details	2024.11.08
	Extended runway rules	gaben	Extending core runway validation rules. Currently validating ref values and offering autofix for runways drawn as an area. More details	1_2023-04-02
	Facebook not website	CjMalone	More details	1.2_2023-04-12
	France specific rules	PanierAvide	Rules, which are limited to France only. More details	1.99_2024-08-22
	Geology Validator	Kai Johnson	Validates mapping of geological and natural features More details	6_2024-01-16
	Germany specific rules	Klumbumbus	Rules, which are limited to Germany only. More details	1.23_2020-10-22
	​GRB import issues	Midgard	Detect some data issues during GRB assisted mapping	1.4_2020-08-08
	Hungary specific rules	gaben	Rules, which are limited to Hungary only. More details	7_2024-09-28
	Indoor mapping rules	PanierAvide	Rules for validating indoor data More details	1.1_2019-10-01
	Invalid Website Protocol	CjMalone	More details	1.2_2023-04-07
	​Iran-specific rules	Ebrahim Nejati	Rules, which are limited to Iran only. ​More details	1.4
	Italy specific rules	francians, Klumbumbus	Rules, which are limited to Italy only. More details	1.4_2020-04-01
	​Jungle Bus - validation ruleset	nlehuby	Uncompromising validation of transit data ​More details	0.13
	KeepRight Checks	Dave Manzer	Checks for errors based on KeepRight checks ​More details	2_2020-04-05
	​Luxembourg specific rules	David Morais Ferreira (dmlu), Guillaume Rischard (Stereo)	Rules, which are limited to Luxembourg only. ​More details	0.5
	Missing main tag	CjMalone	More details	1.1_2024-10-14
	Missing Opening Hours	CjMalone	Warn when signs of opening_hours, but no opening_hours More details	1.1_2022-07-30
	Missing streetnumber or conscriptionnumber	Jose Riha	Copy value of housenumber tag to either streetnumber or conscriptionnumber More details	1.6_2020-10-05
	​Mountain bike specific rules	naoliv, Stefan Bauer	Rules which check the correct usage of mountain bike specific tags. ​More details	1.0
	Not Check	CjMalone	More details	1.1_2023-08-08
	Old Covid	CjMalone	More details	1.1_2024-09-18
	​OpenRailwayMap – extra ruleset for Germany	rurseekatze	Additional validation of railway data according to the OpenRailwayMap tagging scheme. ​More details	2017-01-09
	​OpenRailwayMap – international validation ruleset	rurseekatze	Validation of railway data according to the OpenRailwayMap tagging scheme. ​More details	2017-01-09
	OSM Lint Validations	Dave Manzer	Checks for errors based on OSM Lint ​More details	3_2020-10-05
	Pictures rules	PanierAvide	Rules for checking syntax of picture-related tags More details	4_2023-11-11
	Portuguese-specific rules	ViriatoLusitano	Community rules for the most common errors and problems found in Portugal. Messages are in Portuguese only. More details	1.6_2020-10-05
	Português-Erros comuns PT2	OSM Portugal	AVISO: APLICAR APENAS EM PORTUGAL. Encontra principalmente erros de ortografia, abreviaturas em nomes, algumas etiquetas não aplicáveis a Portugal e alguns erros de etiquetas mal aplicadas. Os erros começam com "Portugal" para serem facilmente identificados. Verificar com CUIDADO os erros apresentados por esta lista, pois nem sempre são erros. More details	1.41_2024-09-16
	Possible missing weekdays	Klumbumbus	Checks for possible missing weekdays in the opening_hours key. Note that opening hours without weekdays can be correct, so be careful when editing the osm data. More details	1.2_2018-03-24
	Public Transport GTFS	skyper	Special rules for Public transportation supporting GTFS and tags for PTNA. More details	0.0.42_2024-02-07
	QA Tool Inspired Validations	Dave Manzer & Milla Zagorski	Checks for errors inspired from Osmose tag checks	37_2020-11-06
	​Russian housenumbers	zetx16		1.1_2020-02-16
	​Seamark Validation Rules	Aun (Skippern) Johnsen	Rules to give warning when tagging of seamarks are not in accordance with standards in the data model ​More details	0.1
	Slovakia specific rules	Filip009	Rules implementing guideposts and route marker rules in Slovak Republic and some other common mistakes or forggetable things. ​More details	6_2022-07-25
	Source object tag	gileri	Warn of source tags on objects that are obsolete, or will be in future edits More details	1.3_2023-02-11
	swimming_pool tag confusion	nlehuby	Detect Suspicious leisure=swimming_pool	0.17_2020-10-05
	This or That	CjMalone	More details	1.2_2024-10-14
	Ukrainian phone numbers	code: andygol; icon: gontsa	Verify Ukrainian phone numbers formatting and validity. Rules for checking phone number formats in Ukraine. The phone must conform to the format +380 aa xxx xxxx;+380 aaa xx xxxx;+380 аааа хх ххх, where +380 is the code of Ukraine, аа / ааа / аааа is the code of the operator or area, ххх хххх / хх хххх / хх ххх - number format for seven-, six- and five-digit numbers that can be used in the local network without using the network code. Toll-free phones 0 800 ххх ххх must be specified without a country code, the phone:UA key is used to record them. More details	0.12_2022-05-27
	​Ukrainian Streets and Addresses	darkonus	Validation of street names and addresses in Ukraine	0.52_2023-11-28
	Validating tasks in HOT TM projects (HOT TM Validator Checker)	Patrik_B	Few rules mostly for flagging objects with layer tag. ​More details	23_2023-07-23

To add more rules to your list, open the Validator Preferences: Edit -> Preferences -> Validator -> Tag Checker Rules (2nd tab)

Create new rules

If you want to add your rules to this list use one of the two options:

• Simply create a page in this wiki with your rule, e.g. Rules/MyRuleName. This is similar to Styles and Presets. See there for more information about this topic.
• Externally hosted rule URLs can be entered when editing the RulesSource page.

If your rule applies to a limited area, use Territory selectors, to limit the execution to the area.

Rules managed in JOSM wiki

JOSM wiki based Rules is the preferred method.

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