Blast was the short-lived literary magazine of the Vorticist movement in Britain. Two editions were published: the first on 2 July 1914 (dated 20 June 1914, but publication was delayed), featuring a bright pink cover, referred to by Ezra Pound as the "great MAGENTA cover'd opusculus"; and the second a year later on 15 July 1915. Both editions were written primarily by Wyndham Lewis. The magazine is emblematic of the modern art movement in England, and recognised as a seminal text of pre-war 20th-century modernism. The magazine originally cost 2/6.

When the Italian futurist Filippo Tommaso Marinetti visited London in 1910, as part of a series of well-publicised lectures aimed at galvanizing support across Europe for the new Italian avant-garde, his presentation at the Lyceum Club, in which he addressed his audience as "victims of ... traditionalism and its medieval trappings", electrified the assembled avant-garde. Within two years, an exhibition of futurist art at the Sackville Gallery, London, brought futurism squarely into the popular imagination, and the press began to use the term to refer to any forward-looking trends in modern art.

Initially galvanized by Marinetti's verve, Wyndham Lewis—like many other members of the London avant-garde—had become increasingly irritated by the Italian's arrogance. The publication of the English Futurist manifesto Vital English Art, in the June 1914 edition of The Observer, co-written by Marinetti and the "last remaining English Futurist" C. R. W. Nevinson, Lewis found his name, among others, had been added as a signatory at the end of the article without permission, in an attempt to assimilate the English avant-garde for Marinetti's own ends. On 12 June, during recitations of this manifesto and a performance by Marinetti of his poem The Battle of Adrianople, with Nevinson accompanying on drums, Lewis, T. E. Hulme, Jacob Epstein, Henri Gaudier-Brzeska, Edward Wadsworth, and five others roundly interrupted the performance with jeering and shouting. Wyndham Lewis wrote a few days later, "England practically invented this civilisation that Signor Marinetti has come to preach to us about".

The final riposte came with the publication of Blast (later known as Blast 1), written and illustrated by a group of artists assembled by Lewis from "a determined band of miscellaneous anti-futurists". The name Vorticism was coined by the poet Ezra Pound, a close friend of Lewis and the group's main publicist. Writing to James Joyce in April 1914, Pound described the magazine in ambiguous terms: "Lewis is starting a new Futurist, Cubist, Imagiste Quarterly ... I cant tell, it is mostly a painters' magazine with me to do the poems". By July, the magazine had a name, a movement to support, and a typographic style, and it had forged a distinctly English identity, confident enough to praise Kandinsky, question Picasso, and openly mock Marinetti.

Blast 1 was edited and largely written by Wyndham Lewis with contributions from Pound, Gaudier-Brzeska, Epstein, Spencer Gore, Wadsworth, and Rebecca West and included an extract from Ford Madox Hueffer's novel The Saddest Story, better known by its later title The Good Soldier (published under his subsequent pseudonym, Ford Madox Ford). The first edition was printed in folio format, with the oblique title Blast splashed across its bright pink soft cover. Inside, Lewis used a range of bold typographic innovations to engage the reader, that are reminiscent of Marinetti's contemporary concrete poetry such as Zang Tumb Tumb. Rather than conventional serif fonts, some of the text is set in sans-serif "grotesque" fonts.

The opening twenty pages of Blast 1 contain the Vorticist manifesto, written by Lewis and signed by him, Wadsworth, Pound, William Roberts, Helen Saunders, Lawrence Atkinson, Jessica Dismorr, and Gaudier-Brzeska. Epstein chose not to sign the manifesto, although his work was featured. There is also a (positive) critique of Kandinsky's Concerning the Spiritual in Art, a faintly patronising exhortation to suffragettes not to destroy works of art, a review of a London exhibition of Expressionist woodcuts, and a last dig at Marinetti by Wyndham Lewis:

Futurism, as preached by Marinetti, is largely Impressionism up-to-date. To this is added his Automobilism and Nietzsche stunt. With a lot of good sense and vitality at his disposal, he hammers away in the blatant mechanism of his Manifestos, at his idee fixe of Modernity.

The manifesto is primarily a long list of things to be 'Blessed' or 'Blasted'. It starts: