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Modify Headers — HeaderSmith (MV3 ModHeader alternative)

Chrome extension by shota.katougi · Productivity · Developer

  • Established publisher

A Chrome extension in Productivity · Developer with 192 users, barely installed. Audience over the last 30 days: +45.

Every site you visit. This extension can read and change the content of any page you open.

What the developer says, and 5 screenshots

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
192
Rating
5.0 (1 ratings)
Users, last 30 days
+45
Rating, last 30 days
Steady over 30 days
Version
0.2.6
Updated in the store
2026-09-21
Published
2026-05-07
Manifest
V3
Browser access
3 permissions, 1 site pattern

How it has moved

Users
+45 since 02.10
147-192 · 17 readings
  1. 2026-10-05166
  2. 2026-10-08161
  3. 2026-10-09166
  4. 2026-10-10172
  5. 2026-10-13173
  6. 2026-10-16171
  7. 2026-10-18168
  8. 2026-10-19170
  9. 2026-10-21177
  10. 2026-10-22179
  11. 2026-10-23184
  12. 2026-10-24183
  13. 2026-10-25185
  14. 2026-10-28187
  15. 2026-10-29189
  16. 2026-10-30190
  17. 2026-11-01192
Rating
unchanged since 02.10
reviewsrating 5.00 · 17 readings
  1. 2026-10-05reviews1rating5.00
  2. 2026-10-08reviews1rating5.00
  3. 2026-10-09reviews1rating5.00
  4. 2026-10-10reviews1rating5.00
  5. 2026-10-13reviews1rating5.00
  6. 2026-10-16reviews1rating5.00
  7. 2026-10-18reviews1rating5.00
  8. 2026-10-19reviews1rating5.00
  9. 2026-10-21reviews1rating5.00
  10. 2026-10-22reviews1rating5.00
  11. 2026-10-23reviews1rating5.00
  12. 2026-10-24reviews1rating5.00
  13. 2026-10-25reviews1rating5.00
  14. 2026-10-28reviews1rating5.00
  15. 2026-10-29reviews1rating5.00
  16. 2026-10-30reviews1rating5.00
  17. 2026-11-01reviews1rating5.00
Users
+80 since 01.09
111-192 · 31 readings
2026-09-04: released 0.2.42026-09-07: released 0.2.52026-09-11: released 0.2.6
  1. 2026-09-01112
  2. 2026-09-03111
  3. 2026-09-05113
  4. 2026-09-07112released 0.2.5
  5. 2026-09-08114
  6. 2026-09-09113
  7. 2026-09-10114
  8. 2026-09-13124
  9. 2026-09-15125
  10. 2026-09-17127
  11. 2026-09-21128
  12. 2026-09-25140
  13. 2026-09-26148
  14. 2026-09-28147
  15. 2026-10-05166
  16. 2026-10-08161
  17. 2026-10-09166
  18. 2026-10-10172
  19. 2026-10-13173
  20. 2026-10-16171
  21. 2026-10-18168
  22. 2026-10-19170
  23. 2026-10-21177
  24. 2026-10-22179
  25. 2026-10-23184
  26. 2026-10-24183
  27. 2026-10-25185
  28. 2026-10-28187
  29. 2026-10-29189
  30. 2026-10-30190
  31. 2026-11-01192
Rating
unchanged since 01.09
reviewsrating 5.00 · 31 readings
2026-09-04: released 0.2.42026-09-07: released 0.2.52026-09-11: released 0.2.6
  1. 2026-09-01reviews1rating5.00
  2. 2026-09-03reviews1rating5.00
  3. 2026-09-05reviews1rating5.00
  4. 2026-09-07reviews1rating5.00released 0.2.5
  5. 2026-09-08reviews1rating5.00
  6. 2026-09-09reviews1rating5.00
  7. 2026-09-10reviews1rating5.00
  8. 2026-09-13reviews1rating5.00
  9. 2026-09-15reviews1rating5.00
  10. 2026-09-17reviews1rating5.00
  11. 2026-09-21reviews1rating5.00
  12. 2026-09-25reviews1rating5.00
  13. 2026-09-26reviews1rating5.00
  14. 2026-09-28reviews1rating5.00
  15. 2026-10-05reviews1rating5.00
  16. 2026-10-08reviews1rating5.00
  17. 2026-10-09reviews1rating5.00
  18. 2026-10-10reviews1rating5.00
  19. 2026-10-13reviews1rating5.00
  20. 2026-10-16reviews1rating5.00
  21. 2026-10-18reviews1rating5.00
  22. 2026-10-19reviews1rating5.00
  23. 2026-10-21reviews1rating5.00
  24. 2026-10-22reviews1rating5.00
  25. 2026-10-23reviews1rating5.00
  26. 2026-10-24reviews1rating5.00
  27. 2026-10-25reviews1rating5.00
  28. 2026-10-28reviews1rating5.00
  29. 2026-10-29reviews1rating5.00
  30. 2026-10-30reviews1rating5.00
  31. 2026-11-01reviews1rating5.00

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

Every site you visit. This extension can read and change the content of any page you open.

The full permission history for this extension

Version history

  1. Version 0.2.6
  2. Version 0.2.5
  3. Version 0.2.4

What changed recently

  1. Moved to another store category
  2. Store description rewritten
  3. Package size changed
Show the remaining 7
  1. Privacy policy link added to the listing
  2. Renamed from "HeaderSmith — Modify HTTP Request & Response Headers" to "Modify Headers — HeaderSmith (MV3 ModHeader alternative)"
  3. Released version 0.2.6 (was 0.2.5)
  4. Package size changed
  5. Released version 0.2.5 (was 0.2.4)
  6. Package size changed
  7. Released version 0.2.4 (was 0.2.3)

The publisher

shota.katougi publishes 5 listings we track, 230 users between them. Listed website: dev-tools-hub.xyz.

  1. SnapReply - Email Templates with Variables shota.katougi · Productivity · Tools · published 2026-04-03 18 users ★ 5.0
  2. Website Blocker & Focus Timer — FocusGuard shota.katougi · Productivity · Education · published 2026-04-29 7 users
  3. InboxSLA — Client Reply Deadlines & Missed-Reply Alerts shota.katougi · Productivity · Tools · published 2026-04-20 7 users
Show 1 more from this publisher
  1. DownloadMap — Find Downloadable Files on the Page shota.katougi · Productivity · Tools · published 2026-08-19 6 users

Like this one

Listings the catalog judges closest in what they say they do.

  1. OpenHeader — HTTP Header Editor Describes nearly the same job, smaller audience 55 users
  2. Headrule - Modify HTTP Request & Response Headers Describes nearly the same job, smaller audience 10 users
  3. ModHeader Extension: HTTP Header Editor Describes nearly the same job, smaller audience 9k users ★ 4.2
  4. Configurable Header Manager Describes nearly the same job, smaller audience 3 users
  5. Custom Modify Headers Describes nearly the same job, smaller audience 7 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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Users and rating on Ext Ops Panel

Markdown

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HTML

<a href="https://extops.dev/extensions/cjeccfigffehhiggbegenenmchobeabj"><img src="https://extops.dev/extensions/cjeccfigffehhiggbegenenmchobeabj/badge.svg" alt="Users and rating on Ext Ops Panel" height="20"></a>

Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-11-01. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built